'Rejoice' in the Bible

I know that there is nothing good for them but to rejoice and to do well in their life;

And I have seen that there is nothing better than that man should rejoice in his own works; for that is his portion; for who shall bring him to see what shall be after him?

There is no end of all the people, of all that stood before them; those however that come after shall not rejoice in him. Surely this also is vanity and a striving after the wind.

Every man also to whom God hath given riches and wealth, and power to eat thereof, and to take his portion and to rejoice in his labour: that is a gift of God.

but if a man live many years, and rejoice in them all, yet let him remember the days of darkness; for they shall be many: all that cometh is vanity.

Rejoice, young man, in thy youth; and let thy heart cheer thee in the days of thy youth, and walk in the ways of thy heart, and in the sight of thine eyes; but know that for all these things God will bring thee into judgment.