John 18:3
“Judas then, having received a band of men and officers from the Chief Priests and Pharisees, comes there with lanterns, and torches, and weapons.”
And these men had often at other times sent to seize Him, but had not been able; whence it is plain, that at this time He voluntarily surrendered Himself. And how did they persuade the band? They were soldiers, who had made it their practice to do anything for money.
Source: Homilies on the Gospel of John (New Advent)