He is not the God of the dead, but the God of the living. You are therefore greatly mistaken."
Mark 12:27
Surrounding context
12:26 But concerning the dead, that they rise, have you not read in the book of Moses, in the burning bush passage, how God spoke to him, saying, "I am the God of Abraham, the God of Isaac, and the God of Jacob'?
12:27 He is not the God of the dead, but the God of the living. You are therefore greatly mistaken."
12:28 Then one of the scribes came, and having heard them reasoning together, perceiving that He had answered them well, asked Him, "Which is the first commandment of all?"