The Lord was pleased, we find, both by word and by vision, to confirm the Prophet in his new appointment. And the Lord which raised up to the Prophet's mind these images, took care to instruct his mind how to interpret them, that nothing of divine teaching might fall to the ground.
Jeremiah 1:11-16
11 Moreover the word of the LORD came unto me, saying, Jeremiah, what seest thou? And I said, I see a rod of an almond tree.
12 Then said the LORD unto me, Thou hast well seen: for I will hasten my word to perform it.
13 And the word of the LORD came unto me the second time, saying, What seest thou? And I said, I see a seething pot; and the face thereof is towardb the north.
14 Then the LORD said unto me, Out of the north an evil shall break forth upon all the inhabitants of the land.
15 For, lo, I will call all the families of the kingdoms of the north, saith the LORD; and they shall come, and they shall set every one his throne at the entering of the gates of Jerusalem, and against all the walls thereof round about, and against all the cities of Judah.
16 And I will utter my judgments against them touching all their wickedness, who have forsaken me, and have burned incense unto other gods, and worshipped the works of their own hands.