Mark 14:16
And his disciples went forth, and came into the city, and found as he had said unto them: and they made ready the passover. And his disciples went forth, and came into the city, and found as he had said unto them: and they made ready the passover.
The disciples went forth into the city, found everything just as Jesus had told them, and made ready the Passover meal. The preparation was entrusted to Peter and John in a furnished, borrowed upper room, and called for unleavened bread, bitter herbs, wine, and a lamb, with the lamb slain in the temple court and then cooked in a private house. The place was kept from the disciples until preparations were underway so that Judas could not reveal it to Jesus' enemies and disrupt the supper. The verse belongs to the account of Jesus' ministry leading up to the time He was apprehended.
The Passover was the annual seven-day feast commemorating Israel's deliverance from Egypt, with unleavened bread eaten throughout the feast and the paschal lamb eaten at night on the first day. The law required the lamb to be slain on the fourteenth day of the first month between the two evenings, in the afternoon between about three o'clock and sunset. The preparation and meal took place on the evening of the fourteenth day of the month, identified as Thursday, with Jesus eating that night, before His Friday crucifixion on the fifteenth day, the first day of the Feast of Unleavened Bread.
The verse confirms that Jesus kept the Passover at its appointed legal season at its regular time, not a day early. This was consistent with His being born under the law as a minister of the circumcision who learned obedience, knew no sin, was without sin, and fulfilled all righteousness. On another understanding held by some, the supper Jesus ate was a few hours before the regular Passover though on the same day, and the timing of His death matched the Passover time between the two evenings, after the ninth hour and after the darkness ended.
This was the last Passover before Christ's death. Its deliverance from Egypt pointed to the greater deliverance from sin through the Messiah, and the meal became the setting in which Jesus prepared His disciples to understand His approaching death and its memorial. That night He instituted the feast commemorating His death as the Lamb of God before being taken to be crucified.