He planned it carefully. A final time to be with the twelve. Just them.
That night, all over Jerusalem, families were celebrating Passover. In a real sense these men were family.
The arrangements were made in secret. Jesus did not want this time to be disturbed. Peter and John left the group earlier in the day. Went into the city. Found the prearranged (?) room. Went to the temple. Sacrificed a lamb. Came back to prepare the Passover meal. Jesus and the rest arrived later.
Nearly 1/3 of gospel material is about the last week of Jesus’ life. And nearly 1/3 of the material on the last week deals with this night. Passover. Washing Feet. Judas leaves. The Lord’s supper. The Lord’s words (John 14-17). Final hymn. Gethsemane.
The gospel writers all agree. If you want to understand the Lord, you should pay attention to the events and meaning of this night.