(Read Matthew 26:17-30.)
The disciples ask Jesus where He wants to eat the Passover and He gives them a rather detailed answer.
During the supper, Jesus reveals that He knows Judas is going to betray Him.
This passage shows us two things. One, Jesus knows everything. Two, we need to ask Him questions.
How many times do we assume we know what Christ wants us to do only to find out later that we've gone off half-cocked?
Make a habit of humbling yourself, acknowledging that you don't know everything but Jesus does, and ask Him what He'd like you to do.