North. Here, the northern provinces of the Assyrian Empire to which the ten tribes had been exiled (see 2 Kings 15:29; 17:6; 18:11; Jer. 16:15; 23:8; 31:8). The exiles were invited to repent and return.
Return, thou backsliding. There is a play on words in the Hebrew, the word for “return” being shubah, and the word for backsliding, meshubah. The command is literally, “turn back, O backturning Israel” (see on v. 6). The appeal to Israel was doubtless to excite Judah to godly jealousy and repentance (see Rom. 11:14).
Cause mine anger to fall. Literally, “cause my face to fall.” The idiom is illustrated in Gen. 4:5, 6 (see Job 29:24). God would remove the frown of His displeasure from them (see Lev. 17:10; Ps. 34:16).
I am merciful. The mercy of God is the ground of this conditional promise and the hope of all who will avail themselves of it (see Jer. 3:5; cf. Ps. 86:15; 103:8, 9).