I can remember quite well the first time I heard it. I was at Falls Creek Camp and my youth group had just finished doing a low ropes team building course when the counselor said it. "You can't put Jesus in a box." The counselor was almost right.
Jesus. Jesus is the Son of God. He is also the King of Kings and the Lord of Lords. He is the First and the Last. Jesus is he Lamb that was slain and the victor over death. He is my healer and my Wonderful Counselor. He is the Word. The Creator. Jesus is the Messiah.
The list above describes Jesus. It is not an exhaustive list, but you can bank that Jesus is at least all of these things. Why do I make such a bold statement? I make such a bold statement because the Bible describes Jesus that way.
Now, if you have studied any church history at all, you will know that one of the great battles the church continuously fights is the battle against heresies, or false doctrines. Some of them are bold, some come in costumes, but what makes a heresy a heresy is they are taking Jesus out of the box.
I know that when people say that "You can't put Jesus in box" they often mean we can't make Jesus into what we want Him to be or we can't make Jesus less than who He really is by putting Him in a box that seems to suck away all of His power. But, I can assure you of at least one thing. There is one box that Jesus has to go in and cannot come out of. It is the Bible box.