‘Then Jacob said to his household, and to all who were with him, “Put away the strange gods which are among you, and purify yourselves and change your clothing. And let us rise and go to Bethel, and I will make there an altar to God who answered me in the day of my distress and was with me in the way in which I went.”
Jacob is aware of the solemnity of this moment. He is travelling back to where he had seen Heaven and earth meet, where he had made a solemn covenant with God, a place he could never forget. And this causes him to take a new look at the family tribe. The distinction between ‘his household' and ‘those who were with him' is interesting. His household, which would be those with whom he left Paddan-aram, would include his servants and retainers and would be quite large, but clearly others have joined up with them resulting in an even larger group, including the remnants of Shechem.
But this solemn moment must be prepared for. All is not well. Many are secretly worshipping strange gods, superstition is rife, loyalty to Yahweh is in abeyance. These strange gods may indeed include the teraphim stolen by Rachel which she may have begun to worship, although she may well have been doing so only in secret without Jacob's knowledge. But they cannot go to that sacred place with these abominations (the name later given to idols). There can be no idols in Beth-el. There must be a new dedication.
So they are to put away these gods (it is not enough to stop heeding them, they must be got rid of). Then they are to ritually purify themselves, including changing their clothes, in preparation for the journey to Bethel. We have no hint of the method of ritual purification but it may well have included ritual washing and a period of abstinence from sexual activity, removing the ‘earthiness' so that they can be fit to approach Bethel and God. The washing is to remove ‘earthiness'. The re-clothing suggests a presentation of themselves before God having rid themselves of the past (such semi-nomadic men did not regularly wash or change their clothing. Indeed the passion for cleanliness is a modern virtue). All would be aware that this was a life-changing moment.
As they did, it is good for us too to take time to re-examine our lives and rid ourselves of those things that have begun to hinder our walk with God. Then we too may have deeper experience of God.
The final purpose is to go to Bethel, where the God Who has continually watched over him had appeared to him, as they would all know, and to build an altar where he had erected the pillar. Shechem no longer holds a welcome for them so that a new sanctuary is required. And Jacob recognises that this is a call to return back to what Yahweh had intended for him from birth as previously confirmed at Bethel.