So he consented, and began looking for a good opportunity to betray Jesus to them [at a time when He was] separated from the crowd [because the people might riot or stop them from seizing Him].
Then came the preparation day of Unleavened Bread on which the Passover lamb had to be sacrificed. [Ex 12:18-20; Deut 16:5-8; Matt 26:17-19; Mark 14:12-16]