Genesis 35:2

Then Jacob said unto his household, and to all that were with him, Put away the strange gods that are among you, and be clean, and change your garments. This was an act of repentance, since Jacob, up till now, had permitted Rachel to keep her father's idols, Genesis 31:32, and had not turned the hearts of the members of his household from idolatry. His order went forth that all the strange gods and everything that savored of superstition and idolatry be removed from their midst, that they should purify themselves, moreover, through religious washings and by a complete change of garments.