'In that Day' in the Bible

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 come upon them; so that they will say in that day, Are not these evils come upon us because our God is not among us?

And I will surely hide my face in that day for all the evil which they shall have wrought, in that they are turned unto other gods.