John 17:20

Jesus now identified future believers as the objects of His intercession, as well as the Eleven. He described them as those who would believe through the witness of the Eleven. All Christians have come to Jesus Christ either directly or indirectly through one or another of the original disciples or apostles. As we have seen, John had a special interest in stressing the importance and effectiveness of the witness of believers. This witness is the concrete expression of the mission to which Jesus had been referring (John 17:18-19). Even though the Eleven would fail Jesus soon, they would return to follow Him and would carry on the mission that He gave them.