In John 13:21-38, during the Last Supper, Jesus announces Judas's betrayal, issues His new commandment—"Love one another as I have loved you"—and predicts Peter's threefold denial before the rooster crows. Judas departs into the night after a final act of kindness, setting the crucifixion in motion for humanity's salvation. Peter's bold pledge to die for Jesus crumbles under fear, exposing human frailty and the need for grace (later shown in his restoration). Through sovereign love, Jesus turns betrayal and denial into redemptive good: Judas's evil advances the cross, Peter's failure highlights reliance on Christ rather than self, and the command to love—mirroring Jesus' foot-washing, forgiving, sacrificial love—becomes the defining mark of His disciples. This steadfast love, not perfection, identifies believers to the world and flows from Christ's endurance of both sins without retaliation, calling us to self-examination, mutual service in the church, daily self-denial, and trust in His persevering grace (Hebrews 10:39).