Charles Ellicott Commentary Mark 12:26

"But as touching the dead, that they are raised; have ye not read in the book of Moses, in [the place concerning] the Bush, how God spake unto him, saying, I [am] the God of Abraham, and the God of Isaac, and the God of Jacob?" — Mark 12:26 (ASV)

How in the bush God spake unto him.—Better, at the bush, how God spake to him. The reference to the bush, not given by Matthew, is common both to Mark and Luke, and the order of the words in the Greek of both shows that they point to “the bush,” not as the place in which God spoke, but as the title or heading by which the section Exodus 3 was commonly described.