We have a commission from God to speak His Word to the people of this world. God's words are words of life. God did not give us this commission because of our great knowledge or because of our great skill in speaking. He gave it to us because we listened to the end that we received eternal life. If all you know of God's Word is that Jesus Christ is Lord and that God raised him from the dead (Romans 10:9) then you know enough to speak words of life - eternal life - to the people.
Throughout God's Word are examples of men of God called and commissioned by God to speak His word. Although they did not have the greatness of the new birth to share as we do, they had the two things necessary to carry out the commission: 1) they were willing to go; and 2) they had words from God to share.
And Moses said unto the Lord, O my Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant: but I am slow of speech, and of a slow tongue.
And the Lord said unto him, Who hath made man's mouth? or who maketh the dumb, or deaf, or the seeing, or the blind? have not I the Lord?
Now therefore go, and I will be with thy mouth, and teach thee what thou shalt say.
Moses had the two requirements necessary to carry out God's commission to speak. He was meek (Numbers 12:3 says - very meek above all that were upon the face of the earth): he was willing to listen and willing to go! And secondly, God had promised to give him all the words he needed to speak. God spent some time (if you read the context of Exodus 4) convincing Moses that he could do the job. And in the end God never did get him to see that he could speak well enough to deliver the message. God ended up letting Moses tell the words to Aaron and let Aaron speak to the people. But from God's point of view the fact that Moses was slow of speech and not eloquent had nothing to do with his ability to go and speak God's Word. Moses had all he needed. A willing heart and the words to speak.
Then the word of the Lord came unto me, saying,
Before I formed thee in the belly I knew thee; and before thou camest forth out of the womb I sanctified thee, and I ordained thee a prophet unto the nations.
Then said I, Ah Lord God! behold, I cannot speak: for I am a child.
But the Lord said unto me, Say not, I am a child: for thou shalt go to all that I shall send thee, and whatsoever I command thee thou shalt speak.
Be not afraid of their faces: for I am with thee to deliver thee, saith the Lord.
Then the Lord put forth his hand, and touched my mouth. And the Lord said unto me, Behold, I have put my words in thy mouth.
Just as with Moses, Jeremiah did not feel adequate to speak for God. But God knew from before he was born that here was a man WILLING to go and that once he did go he would speak God's Word no matter what pressure was put on him to stop. That kind of willingness and meekness to God is the primary ingredient. When you are willing to go, stand, and speak for God, He will give you an abundance of His Word. Jeremiah's heart was so focused on God and His word that when the pressure was on him to quit speaking he just could not help but speak.
Jeremiah 20:7-9 (Lamsa Translation)
O Lord, thou hast comforted me, and I am comforted; thou art stronger than I, and hast prevailed; I have become a laughing-stock daily, and every one mocks me.
For at the time when I spoke and cried out, I spoke against the extortioners and against the robbers; because the word of the Lord has become for me a reproach and derision daily.
Then I said, I will not make mention of him, nor speak any more in his name. But his word became in my heart like a burning fire kindling in my bones; and I sought to be patient, but I could not endure it.
When Jeremiah spoke God's Word the people laughed and mocked him daily. So he said, "I'm not speaking God's Word any more!" But the Word of God burned within his heart. It was like a fire inside. He tried to not speak but he just could not stand keeping it inside. He had to let it out. He just had to speak God's Word. That kind of love for God and His word; that kind of willingness to go forth is what made Jeremiah the great prophet he was. God will show you great things out of His Word and work very intimately with you as you go forth speaking His Word.
Moreover he said unto me, Son of man, eat that thou findest; eat this roll [scroll - the Word], and go speak unto the house of Israel.
So I opened my mouth, and he caused me to eat that roll [the Word].
And he said unto me, Son of man, cause thy belly to eat, and fill thy bowels with this roll [the Word] that I give thee. Then did I eat it; and it was in my mouth as honey for sweetness.
And he said unto me, Son of man, go, get thee unto the house of Israel, and speak with my words unto them.
Ezekiel was told to eat, go, and speak! The Word of God is sweet as honey. Eat it up. Fill your heart and mind with that wonderful food of the Word. And then go speak it to others. God wants you to fill-up on His word. And He wants you to go and speak it to others. The more you speak, the more you let it out, the more He will fill you with a greater knowledge and understanding. Giving equals receiving. As you go and speak what you know (and you don't have to know a lot) God will give you more.
II Corinthians 5:18-20
And all things are of God, who hath reconciled us to himself by Jesus Christ, and hath given to us the ministry of reconciliation;
To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.
Now then we are ambassadors for Christ, as thou God did beseech
you by us: we pray
you in Christ's stead, be ye reconciled to God.
God reconciled us to himself. Reconciliation is to bring back that which had been separated. He gave us the word of reconciliation. He gave us Romans 10:9-10 - that which must be shared if others are to be brought back to God, saved, and given eternal life. And he have us the ministry of reconciliation. When Jesus Christ was on earth it was his job to bring men and women back to God. Now it is our job. We must speak forth the word that will reconcile men and women. The word you in verse 20 is in italic print in the King James Version which means it was not in the original text. We are ambassadors for Christ. We pray, ask, speak! in the place of Christ (in Christ's stead) "be ye reconciled to God." That is our ministry. That is the Word we speak. We ask others to be reconciled to God as we have been reconciled to God. We tell them about the Lord Jesus Christ and that God raised him from the dead. We speak to them the words of life!
And when Pharaoh drew nigh, the children of Israel lifted up their eyes, and behold, the Egyptians marched after them; and they were sore afraid: and cried out unto the Lord.
And they said unto Moses, Because there were no graves in Egypt, hast thou taken us away to die in the wilderness? wherefore hast thou dealt thus with us, to carry us forth out of Egypt?
Is not this the word that we did tell thee in Egypt, saying, Let us alone, that we may serve the Egyptians? For it had been better for us to serve the Egyptians, than that we should die in the wilderness.
And Moses said unto the people, Fear ye not, stand still, and see the salvation of the Lord, which he will shew to you to day: for the Egyptians whom ye have seen to day, ye shall see them again no more for ever.
The Lord shall fight for you, and ye shall hold your peace.
And the Lord said unto Moses, Wherefore criest thou unto me? speak unto the children of Israel, that they go forward:
When caught between the Egyptians and the Red Sea the children of Israel wanted to go back to bondage in Egypt. Moses told them to stand still and see God work. But God said: Go forward! We can go back to our old way of life, stand still and watch, or go forward with the word of God. You do not need to know a lot of the Word. You do not have to be an eloquent speaker. All you have to do is be willing to go forward. God will be with you. Just go, stand, and speak to the people all the words of this life!