John 17:12
While I was with them, I protected them in your name that you have given me. I guarded them, and not one of them was lost except the one destined to be lost, so that the scripture might be fulfilled — Jesus' past protection of the disciples reflects his shepherding role (10:27-30), while the reference to "the one destined to be lost" (ho huios tēs apōleias, the son of perdition) names Judas. The citation of scripture (likely Psalm 41:9, "my own familiar friend... lifted his heel against me") demonstrates how even betrayal serves God's redemptive purposes, though without absolving Judas of moral responsibility.