Jeremiah was called by God to be a prophet. He resists such a call at first not feeling particularly capable for such a task. God reminds him, "Do not be afraid. I am with you to deliver you." I am particularly sure what we feel a lot like Jeremiah still today. God calls us to rebuking, plucking what needs plucking, but we feel particularly incapable. A good lesson to remember is the same as Jeremiah, "God goes with us and delivers us when we need it."