Exodus 4:10-12 "Moses said to the LORD, "O Lord, I have never been eloquent, neither in the past nor since you have spoken to your servant. I am slow of speech and tongue." The LORD said to him, "Who gave man his mouth? Who makes him deaf or mute? Who gives him sight or makes him blind? Is it not I, the LORD ? Now go; I will help you speak and will teach you what to say."
God had specially picked Moses to lead his people out of Egypt. Moses tried to excuse himself from duty by claiming his speech was not eloquent. Many people use the same excuse for not sharing the gospel with others. But the power of the gospel is in the message itself, not the delivery (Romans 1:16). That doesn't mean that we shouldn't try to improve our ability in speaking it, but just that the main thing is to share it!
