Expositor's Bible Commentary Commentary John 21:19

"Now this he spake, signifying by what manner of death he should glorify God. And when he had spoken this, he saith unto him, Follow me." — John 21:19 (ASV)

The introduction of v.18 by “I tell you the truth” makes the statement of Jesus solemn and important. The author goes on to add an explanation of Jesus’ enigmatic words. They predicted Peter’s career: a new responsibility, a new danger, and violent death. Jesus placed Peter in a category with himself—a life spent for God and ultimately sacrificed to glorify God (cf. 12:27–32; 13:31). The command “Follow me” literally means “Keep on following me.” Jesus showed Peter that if he were to fulfill his promise of loyalty, he would have to follow him to his own cross.