Matthew 17:10-13

His disciples asked him, “Why do all the religious scholars insist that Elijah must first appear before the Anointed One comes?” He answered them, “They’re right. Elijah must come first and restore all things. But Elijah has already appeared. And yet they didn’t recognize him, so they did to him whatever they pleased. And the Son of Man is destined to suffer the same abuse as what they did to him.” Then the disciples realized that Jesus was referring to John the Baptizer all along.