“And the LORD spake unto Moses, Say unto Aaron, Take thy rod, and stretch out thine hand upon the waters of Egypt, upon their streams, upon their rivers, and upon their ponds, and upon all their pools of water, that they may become blood; and that there may be blood throughout all the land of Egypt, both in vessels of wood, and in vessels of stone.” Exodus 7:19

There are times the Lord spoke to Moses and Aaron. Then there are times the Lord spoke to Moses and said, “say unto Aaron.” This is what is expected out of every preacher. He is to hear from God and tell the people what He said.