Looking carefully at the Song of Ha’azinu, you’ll probably notice some frightening predictions. Moshe Rabbeinu tells of a time when the good life of Eretz Yisrael will cause Bnei Yisrael to become spoiled and “fat.” Instead of thanking HaShem for the good things, they will rebel against HaShem, failing to recognize that it is He who caused them to become wealthy in the first place!
When that happens, HaShem warns that He will turn His face away from His people. It was as if He’d be saying, “You think you achieved your success without Me? Now, let’s see how far you will get when I will, so to say, ‘hide My face’ and leave you alone.”