mixed with their sacrifices

Here's an enigma for you:

1. A, who can't walk, can't stand w/o pain, stands in worship. Because she knows that the greater pain would be in not praising God.

2. J, the Savior of the world, knows of the impending pain, carries the cross. Because He knows that the greater pain would be disobeying God.

3. X, who can walk, can stand, and has no impending pain, worships not, stands not, obeys not. Because he/she knows NOT that there is a greater pain than mere tired legs.

PROBLEM: One of these doesn't belong in His house. Which is it?