Jacob has not stayed with his family despite essau’s warm welcome, or gone where God told him to, bethel. He’s gone off by himself and the decision brings disaster.
His daughter is raped. Dinah, the girl, and Jacob should have known this was a possiblity, she went wandering by herself in a foreign town with very different attitudes to sex.
The boy responsible is the favoured son of a wealthy man, and fancies he loves Dinah. Jacob doesn’t react negatively to the rape at all, which stokes the anger of her brothers. He negotiates to make it right in a way by allowing her to become the boys wife.
Jacob’s sons insist the foreign men be circumcised, but two of them revenge kill them all while they are weak and recovering. The rest plunder and pillage their stuff and take all the women and children.
It’s an unbelievably evil episode, wrong in so many ways all related to Jacob’s poor choices and ignoring God. He seems to have no leadership of his family, they complain that their sister was treated like a prostitute, but they pervert and prostitute their religion using it as a cover for violence and greed.
Jacob’s response is to tell them how much danger they have put the whole family in by declaring war on the whole country. It’s way too late by then.
God does not speak in this chapter, but his law is misused by violent greedy men.
The last time God spoke, he changed Jacob’s name to Israel. But significantly he is called Jacob again straight away here. He has disengaged from God. He is still struggling with God, as he was when he literally wrestled with God in human form in the last chapter. He needs to get back to that place where he is asking for god’s blessing.