'In that Day' in the Bible

Moreover, your little ones, which ye said should be a prey, and your children, which in that day had no knowledge between good and evil, they shall go in thither, and to them will I give it, and they shall possess it.

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 befall them, so that they will say in that day, Have 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 evils which they shall have wrought, in that they are turned to other gods.