This is the manuscript of the third sermon in the series "Watch Your Mouth".
But Joshua had commanded the army, “Do not give a war cry, do not raise your voices, do not say a word until the day I tell you to shout. Then shout!” (Joshua 6:10 NIV)
Every single object in the physical world has what scientists call a "resonant frequency"—a specific rate of vibration. If a singer hits the exact resonant frequency of a wine glass, that glass will shatter from the sheer force of the sound wave.
In the spiritual realm, your voice has a frequency. When you speak, you are broadcasting on one of two frequencies: the frequency of the flesh (which aligns with defeat, doubt, and despair) or the frequency of faith (which aligns with God’s sovereign promises, victory, and power).
Many of us wonder why we experience a constant stream of defeat in our homes, finances, health, and peace of mind, when the reality is that we use our own mouths to declare that defeat every single day.
Scripture
Joshua 6:1-10 NIV [1] Now the gates of Jericho were securely barred because of the Israelites. No one went out and no one came in. [2] Then the Lord said to Joshua, “See, I have delivered Jericho into your hands, along with its king and its fighting men. [3] March around the city once with all the armed men. Do this for six days. [4] Have seven priests carry trumpets of rams’ horns in front of the ark. On the seventh day, march around the city seven times, with the priests blowing the trumpets. [5] When you hear them sound a long blast on the trumpets, have the whole army give a loud shout; then the wall of the city will collapse and the army will go up, everyone straight in.” [6] So Joshua son of Nun called the priests and said to them, “Take up the ark of the covenant of the Lord and have seven priests carry trumpets in front of it.” [7] And he ordered the army, “Advance! March around the city, with an armed guard going ahead of the ark of the Lord.” [8] When Joshua had spoken to the people, the seven priests carrying the seven trumpets before the Lord went forward, blowing their trumpets, and the ark of the Lord’s covenant followed them. [9] The armed guard marched ahead of the priests who blew the trumpets, and the rear guard followed the ark. All this time the trumpets were sounding. [10] But Joshua had commanded the army, “Do not give a war cry, do not raise your voices, do not say a word until the day I tell you to shout. Then shout!”
Introduction: The Frequency of Faith
Today is week three in our series, "Watch Your Mouth”.
Over the last two weeks, we have laid a heavy foundation. In week one, we looked at the explosive power behind our teeth—realizing there is dynamite that can either clear a path for the Kingdom or blow up our lives. Last week, we dug beneath the surface to realize that our mouth is simply a loudspeaker for our heart. If we want to change the song coming out of the speakers, we have to let the Holy Spirit change the station playing in the heart.
Today, we are taking a massive ground-shifting step. We are going to look at how our words actually shape our spiritual environment.
Every single object in the physical world has what scientists call a "resonant frequency"—a specific rate of vibration. If a singer hits the exact resonant frequency of a wine glass, that glass will shatter from the sheer force of the sound wave.
In the spiritual realm, your voice has a frequency. When you speak, you are broadcasting on one of two frequencies: the frequency of the flesh (which aligns with defeat, doubt, and despair) or the frequency of faith (which aligns with God’s sovereign promises, victory, and power).
Many of us are wondering why we are experiencing a constant stream of defeat in our homes, our finances, our health, and our peace of mind, when the reality is that we are using our own mouths to declare that defeat every single day.
Scripture shows us how God connects our voice to our victory.
Following the death of Moses, Joshua was appointed by God to lead the nation of Israel into Canaan—the Promised Land. Jericho was the very first major city standing in their path. Geographically, it was a vital strategic stronghold. If Israel could capture Jericho, they would successfully split the land of Canaan right down the middle, preventing the northern and southern kings from uniting against them.
Jericho was famous for being a heavily fortified city-state. Think of ancient Middle Eastern fortresses like a layered defense: first, a giant dirt slope to slow you down, then a heavy stone retaining wall, and finally, towering brick walls capping the whole thing off."
Picture God’s people standing before the formidable fortress of Jericho. Its massive stone walls loomed large, and by any human standard, victory was an absolute impossibility. It was then that God handed Joshua a battle strategy that defied all conventional military logic. The strategy was to;
March around the city once a day for six days, and then seven times on the seventh day.
The strategy is laid out clearly in
Joshua 6:2-5 (NIV) Then the Lord said to Joshua, 'See, I have delivered Jericho into your hands, along with its king and its fighting men. March around the city once with all the armed men. Do this for six days. Have seven priests carry trumpets of rams’ horns in front of the ark. On the seventh day, march around the city seven times, with the priests blowing the trumpets. When you hear them sound a long blast on the trumpets, have the whole army give a loud shout; then the wall of the city will collapse and the army will go up, everyone straight in.'"
Woven directly into this unorthodox battle plan was a strict, highly specific command regarding their speech: "Do not say a word until the day I tell you to shout."
Here’s our text for today
Joshua 6:10 NIV But Joshua had commanded the army, “Do not give a war cry, do not raise your voices, do not say a word until the day I tell you to shout. Then shout!”
God gave Joshua a highly unconventional military strategy to conquer the fortified city of Jericho:
The Israelite army, along with priests carrying the Ark of the Covenant, had to march around the city walls once a day for six days, and seven times on the seventh day.
For the first six days, total silence was required from the soldiers. No battle cries, no chatter, no whispering.
Only on the seventh day, after the seventh lap, when the trumpets sounded a long blast, were they finally commanded to shout—at which point the walls of Jericho collapsed.
Why did God demand total, absolute silence from an army of over 600,000 soldiers? Let’s see if we can find out why.
The Israelites were historically notorious for grumbling, complaining, and vocalizing fear whenever they faced an obstacle. Here are a couple of examples;
Exodus 15:23-24 NIV [23] When they came to Marah, they could not drink its water because it was bitter. (That is why the place is called Marah.) [24] So the people grumbled against Moses, saying, “What are we to drink?”
This happened shortly after they went through the Red Sea on dry ground, by the way.
Then at the border of Cannon after the 10 out of 12 spies came back talking about the giants and well fortified cities in the land,
Numbers 13:32-33 NIV [32] And they spread among the Israelites a bad report about the land they had explored. They said, “The land we explored devours those living in it. All the people we saw there are of great size. [33] We saw the Nephilim there (the descendants of Anak come from the Nephilim). We seemed like grasshoppers in our own eyes, and we looked the same to them.”
So maybe, if Joshua had allowed them to speak during those six days of looking up at those intimidating walls, they may have started infecting each other with doubt ("This isn't working," "Why are we just walking?"). So maybe God demanded silence to prevent their fleshly tongues from sabotaging their supernatural victory.
By enforcing complete vocal restraint, God ensured that when the command to "Shout!" finally came on the seventh day, the roar of the army was an undivided expression of collective, uncompromised faith.
Sometimes, the first step to spiritual victory in your life is simply calling a ceasefire on your negative words. If you can’t say anything that aligns with God's promises yet, it is better to be strategically silent.
Now let’s look at a scripture that you hear from me every week.
Romans 10:9-10 NIV [9] If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. [10] For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved.
Our mouth is what unlocks the ultimate victory: which is our salvation.
Belief in the heart is essential, but God requires it to be backed by a verbal declaration from the mouth.
Why is it necessary to verbally declare that Jesus is Lord?
In the ancient Greco-Roman world, to verbally declare "Jesus is Lord" was a massive, dangerous legal statement. It meant you were publicly declaring that Caesar was not your ultimate master. You were shifting your allegiance, your citizenship, and your submission to a higher King.
In the spiritual realm, your verbal confession is a legal document. When you speak the truth of God, you are enforcing the victory of the cross over your current circumstances.
When you practice true biblical confession, you aren't just making up positive thoughts or wishing upon a star. You are using your voice to say the exact same thing about your life that God says about your life. You are bringing your speech into agreement with the King of Kings.
Victory begins when you stop speaking your problems to God, and you start speaking God to your problems.
Mark 11:22-23 NIV [22] “Have faith in God,” Jesus answered. [23] “Truly I tell you, if anyone says to this mountain, ‘Go, throw yourself into the sea,’ and does not doubt in their heart but believes that what they say will happen, it will be done for them.
Jesus didn't tell you to talk about the mountain to everyone who will listen. He told you to talk to the mountain on the authority of His name.
When the enemy whispers that you are worthless, you speak to that mountain: "I am fearfully and wonderfully made, chosen, and redeemed by the blood of the Lamb!"
Psalms 139:14 NIV says I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well. and
Ephesians 1:4-6 NIV [4] For he chose us in him before the creation of the world to be holy and blameless in his sight. In love [5] he predestined us for adoption to sonship through Jesus Christ, in accordance with his pleasure and will— [6] to the praise of his glorious grace, which he has freely given us in the One he loves.
AND
Revelation 12:11 NIV They triumphed over him by the blood of the Lamb and by the word of their testimony; they did not love their lives so much as to shrink from death.
When anxiety tells you your future is ruined, you speak to that mountain:
Philippians 4:19 NIV And my God will meet all your needs according to the riches of his glory in Christ Jesus.
Jeremiah 29:11 NIV For I know the plans I have for you,” declares the Lord, “plans to prosper you and not to harm you, plans to give you hope and a future.
Conclusion
Aligning our priorities with God's will is a continuous process. It demands that we regularly evaluate what we are broadcasting into our surroundings and our hearts.
On that seventh day at Jericho, when the trumpets sounded, Joshua gave the order: "Shout! For the Lord has given you the city!" When they released their voices in alignment with God's command, those thick, impossible walls collapsed flat into the dirt.
Joshua 6:20-21 NIV [20] When the trumpets sounded, the army shouted, and at the sound of the trumpet, when the men gave a loud shout, the wall collapsed; so everyone charged straight in, and they took the city. [21] They devoted the city to the Lord and destroyed with the sword every living thing in it—men and women, young and old, cattle, sheep and donkeys.
What walls are you facing today? Is it a wall of financial distress? A wall of broken relationships? A wall of addiction or depression?
It’s time to call a ceasefire on reckless talk, and start using your voice to declare the victory that Jesus Christ has already won on your behalf. Bring your heart into alignment, open your mouth, and let the truth of God reshape your environment.
Let’s bow our heads as we pray.
Sovereign Lord, You are the God who causes walls to fall. Forgive us for the times we have used our voices to validate our fears rather than declare Your faithfulness. Today, we turn off the frequency of defeat and we turn onto the frequency of faith. We confess with our mouths that Jesus Christ is Lord over our relationships, Lord over our struggles, and Lord over our futures. Give us the grace to speak Your promises directly to our problems. We thank You in advance for the walls that are going to fall. In the victorious name of Jesus, Amen.


