Love calls for humility in lots of different ways. Sometimes we have to apologize and ask for forgiveness when we have wounded someone we love. Or we have to set aside our own preferences and priorities in order to help another person accomplish a goal or agenda.
On the last night, He spent with His disciples before His crucifixion, Jesus humbled Himself before them. To show them that He loved them right up to the end of His life, He took on the role of a servant. At their last supper together He took a towel and a basin of water and washed their feet. They must have been shocked at this display of servitude.
But there were two lessons: One, they should love each other the same way. And two, It prepared them for the love He would demonstrate the next day by dying for their sins.
There are many grand ways to demonstrate love. But none is more powerful than the humility of a willing servant.
Now before the feast of the Passover, when Jesus knew that His hour had come that He should depart from this world to the Father, having loved His own who were in this world, He loved them till the end.
John 13:1