Verse 19. Returned - To their former, and usual course. Their fathers - In Egypt, or in the wilderness. Their own doings - That is, from their evil practices, which he calls their own, because they were agreeable to their own natures, which in all mankind are deeply and universally corrupted, and because they were familiar and customary to them.
Verse 22. May prove - That I may try and see whether Israel will be true and faithful to me, or whether they will suffer themselves to be corrupted by the counsels and examples of their bad neighbours.