Jeremiah 1:6, 9

Then I said, “Ah, Lord GOD! Behold, I do not know how to speak, For I am [only] a young man.” [Ex 4:10; 6:12, 30; 1 Kin 3:7]

Then the LORD stretched out His hand and touched my mouth, and the LORD said to me, “Behold (hear Me), I have put My words in your mouth.