'Confession' in the Bible

And Joshua said to Achan, My son, give, I pray thee, glory to Jehovah the God of Israel, and make confession to him: tell me now what thou hast done, keep it not back from me.

And while Ezra prayed, and made confession, weeping and falling down before the house of God, there were gathered to him out of Israel a very great congregation of men and women and children; for the people wept very much.

And now make confession to Jehovah the God of your fathers, and do his pleasure, and separate yourselves from the peoples of the land, and from the foreign wives.

and I prayed unto Jehovah my God, and made my confession, and said, Alas Lord! the great and terrible God, keeping covenant and loving-kindness with them that love him, and that keep his commandments: