Jeremiah 1:7-8

1:7 The Lord said to me, “Do not say, ‘I am too young.’ But go to whomever I send you and say whatever I tell you. 1:8 Do not be afraid of those to whom I send you, for I will be with you to protect you,” says the Lord.

Jeremiah 1:17

1:17 “But you, Jeremiah, get yourself ready! Go and tell these people everything I instruct you to say. Do not be terrified of them, or I will give you good reason to be terrified of them.