13 You call Me Teacher and Lord, and you say well, for so I am. 14 If I then, your Lord and Teacher, have washed your feet, you also ought to wash one another’s feet. 15 For I have given you an example, that you should do as I have done to you. 16 Most assuredly, I say to you, a servant is not greater than his master; nor is he who is sent greater than he who sent him. 17 If you know these things, blessed are you if you do them. (John 13:13-17)
Jesus teaches by His words and by His examples. Washing His apostles’ feet was a stirring lesson on humble service, given precisely when they were bickering among themselves who was greatest (Lk. 22:24). Here is another crucial lesson: Knowing plus doing the Lord’s will is blessed, while knowing yet failing to do His will is not blessed. It is not enough to say you know God’s will; He wants you to also do His will. When you know and do God’s will you show yourself to be a follower of Jesus.