'Countenance' in the Bible

but for Cain and for his offering He had no regard. So Cain became very angry and his countenance fell.

Then the Lord said to Cain, “Why are you angry? And why has your countenance fallen?

If you do well, will not your countenance be lifted up? And if you do not do well, sin is crouching at the door; and its desire is for you, but you must master it.”