Mark 12:28

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?

Cross-references

Matthew 22:34-40 is the parallel account where the same question about the greatest commandment is asked and answered.

Matthew 23:23 condemns neglecting 'weightier matters of the law', directly echoing the concern for the greatest commandment in Mark 12:28.

Luke 11:42 similarly rebukes neglecting justice and love of God, paralleling the emphasis on the greatest commandment in Mark 12:28.

Matthew 22:36 records the identical question 'which is the great commandment?', directly parallel to Mark 12:28.

1 Timothy 1:5 states the goal of the law is love — echoing the centrality of love that the scribe inquires about.