'What is Good' in the Bible

Judgment let us choose for ourselves, Let us know among ourselves what is good.

For who knoweth what is good for a man in life, the number of the days of the life of his vanity, and he maketh them as a shadow? for who declareth to man what is after him under the sun?

He hath declared to thee, O man, what is good; Yea, what is Jehovah requiring of thee, Except -- to do judgment, and love kindness, And lowly to walk with thy God?

and it is good to be zealously regarded, in what is good, at all times, and not only in my being present with you;

Let no corrupt word out of your mouth go forth, but what is good unto the needful building up, that it may give grace to the hearers;