Mark 8:28 records speculation that Jesus is Elijah—shows the popular expectation of Elijah's return that the scribes' teaching created.

Malachi 3:1 prophesies a messenger preparing the way—the OT foundation for the scribes' teaching that Elijah must come first.

Malachi 4:5 explicitly names Elijah as the prophet sent before the Lord's day—the specific prophecy the scribes reference.

Matthew 11:14 identifies John the Baptist as Elijah—the NT fulfillment of the scribes' expectation that Elijah must appear.

Matthew 17:10 records the same question from the disciples about Elijah's coming—a parallel account of this conversation.

Matthew 17:11 gives Jesus' answer that Elijah truly comes to restore all things—parallel teaching to the Mark 9 context.

Luke 1:17 prophesies John will go in the spirit and power of Elijah—directly linking John to the promised Elijah figure.