12:12 The Lord reminded the Israelites again of their humble origins. Jacob was a refugee who migrated to the land of Aram. There he had to work to pay for a wife, and he did so by tending sheep, a very humble occupation (cf. Deut. 26:5).
12:13 Later the Lord brought the Israelites out of Egypt and kept them alive during their wilderness wanderings by using a prophet, Moses (cf. Deut. 18:18). The Israelites, as well as Jacob, had experienced hardship while in a foreign land. By implication they should not, therefore, have despised the prophets that Yahweh had sent them since Moses (cf. v.10). Furthermore, they should remember that they could return to these conditions if they were not careful.
12:14 In spite of these mercies the Israelites had provoked the Lord to bitter anger with their idolatry (cf. Deut. 4:25; 9:18; 31:29; 32:16, 21; Judg. 2:12; 1 Kings 14:9, 15). Consequently He would not remove the guilt of their sins by forgiving them but would pay them back with punishment and shame. This was the sentence of their divine judge.