Jamieson, Fausset and Brown on Hosea 2:6-7

6-7. thorns ... wall--(Job 19:8; La 3:7, 9). The hindrances which the captivity interposed between Israel and her idols. As she attributes all her temporal blessings to idols, I will reduce her to straits in which, when she in vain has sought help from false gods, she will at last seek Me as her only God and Husband, as at the first (Is 54:5; Jr 3:14; Eze 16:8).

then--before Israel's apostasy, under Jeroboam. The way of duty is hedged about with thorns; it is the way of sin that is hedged up with thorns. Crosses in an evil course are God's hedges to turn us from it. Restraining grace and restraining providences (even sicknesses and trials) are great blessings when they stop us in a course of sin. Compare Lu 15:14-18, "I will arise, and go to my father." So here, "I will go, and return," &c.; crosses in the both cases being sanctified to produce this effect.