One powerful Bible verse that talks about a pastor's calling by God is Jeremiah 1:4-10. It reads, "The word of the Lord came to me, saying, “Before I formed you in the womb I knew you, and before you were born I consecrated you; I appointed you a prophet to the nations.” “Alas, Sovereign Lord,” I said, “I do not know how to speak; I am only a youth.” But the Lord said to me, “Do not say, ‘I am only a youth’; for to all to whom I send you, you shall go."