2 And thou hast sworn—Jehovah liveth, In truth, in judgment, and in righteousness, And blessed themselves in Him have nations, And in Him they boast themselves.

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.