What reason did Moses give God for not being eloquent?

Answer: Slow of speech and tongue

"I have never been eloquent," Moses said, "for I am slow of speech and tongue." God replied, "Who gave man his mouth?"

““Please, Lord,” Moses replied, “I have never been eloquent, neither in the past nor since You have spoken to Your servant, for I am slow of speech and tongue.” And the LORD said to him, “Who gave man his mouth? Or who makes the mute or the deaf, the sighted or the blind? Is it not I, the LORD?”— Exodus 4:10-11 (BSB)