'Cheerful' in the Bible

If I were to say, "Let me forget my complaint,' change the expression on my face, and look cheerful,

"This is what the LORD of the Heavenly Armies says: "The fasts that occur in the fourth, fifth, seventh, and tenth months will be joyful and glad times for the house of Judah, replete with cheerful festivals. Therefore, love truth and peace.'"

Each of you must give what you have decided in your heart, not with regret or under compulsion, since God loves a cheerful giver.

Is anyone among you suffering? He should keep on praying. Is anyone cheerful? He should keep reciting psalms.