2 And you will take your oath, By the living Lord, in good faith and wisdom and righteousness; and the nations will make use of you as a blessing, and in you will they take a pride.

Matthew Henry's Commentary on Jeremiah 4:2

Commentary on Jeremiah 4:1-2

(Read Jeremiah 4:1-2)

The first two verses should be read with the last chapter. Sin must be put away out of the heart, else it is not put away out of God's sight, for the heart is open before him.