A.T. Robertson Commentary Luke 20:37

"But that the dead are raised, even Moses showed, in [the place concerning] the Bush, when he calleth the Lord the God of Abraham, and the God of Isaac, and the God of Jacob." — Luke 20:37 (ASV)

Even Moses (κα Μωυσης). Moses was used by the Sadducees to support their denial of the resurrection. This passage (Exodus 3:6) Jesus skilfully uses as a proof of the resurrection. See discussion on Mt 22:32; Mr 12:26f.