Hide my face — Withdraw my favour and help. Whatever outward troubles we are in if we have but the light of God's countenance, we are safe. But if God hide his face from us then we are undone.
Related Commentaries of Deuteronomy 31:17
Deuteronomy 31:17
17 Then my anger shall be kindled against them in that day, and I will forsake them, and I will hide my face from them, and they shall be devoured, and many evils and troubles shall befallb them; so that they will say in that day, Are not these evils come upon us, because our God is not among us?