Mark 12:28 in the King James Version
And one of the scribes came, and having heard them reasoning together, and perceiving that he had answered them well, asked him, Which is the first commandment of all?
Context
27 He is not the God of the dead, but of the living. You are therefore badly mistaken.”
28 One of the scribes came and heard them questioning together, and knowing that he had answered them well, asked him, “Which commandment is the greatest of all?”
29 Jesus answered, “The greatest is: ‘Hear, Israel, the Lord our God, the Lord is one.