Genesis 35:4

And they gave unto Jacob all the strange gods which were in their hand, and all their earrings which were in their ears; and Jacob hid them under the oak which was by Shechem. Jacob's command was so strict that his wives and his servants readily gave up not only the images, the strange gods which they had retained till now, but also their earrings, which were used as amulets and for other superstitious purposes. Jacob laid aside all his weakness which had yielded such terrible fruits, and buried all the symbols of idolatry and spiritual death which were to be found in his entire household, including now also the Shechemite women and children. Only then is it possible to serve God in the Spirit and in truth, if we cleanse our hearts from all idolatry and from all love of creatures.