What does the Bible say about the call of God for preachers?

In Exodus 3, God calls Moses to be His spokesman to Pharaoh and the children of Israel. This act emphasizes that preaching is not a human invention but a divine appointment; God sends His servants to proclaim His truth. The biblical account illustrates that when God sends His preacher, He equips them with a message and promises to be with them, affirming the theological understanding that effective preaching is rooted in God’s sovereign choice and purpose. This call to preach is intrinsically connected to God's covenantal promise, as He assures Moses of success in preaching His message.