John 13:18
18I don’t speak concerning all of you. I know whom I have chosen; but that the Scripture may be fulfilled, ‘He who eats bread with me has lifted up his heel against me.’
Not all; I know whom I have chosen. Psalm 41 must be fulfilled in a table-companion’s heel. Wesley noted the not-all.
Chosen here is the Eleven in contrast to Judas—His knowing is not confusion. Fulfillment does not make Judas a victim without a heel of his own; lifting the heel is still his act.
Calvin: I know whom I have chosen. Scripture must be fulfilled.
Jesus’ knowledge of His chosen and Scripture’s must sit together with Judas’s treachery. The heel is guilty and written.
Key contrast Jesus knows His chosen; Scripture is fulfilled in the betrayer at bread. Arminians typically refuse to let fulfillment erase Judas’s agency. Reformed commentators often refuse to let agency erase that Jesus knew and Scripture stood.