If I then, the Lord and the Teacher, washed your feet, you also ought to wash one another's feet.
But I say to you, love your enemies, and pray for those who persecute you.
This I command you, that you love one another.
And He said to him, "You shall love the Lord your God with all your heart and with all your soul, and with all your mind. This is the great and foremost commandment. The second is like it, You shall love your neighbor as yourself."
And looking upon them, Jesus said to them, "With men, this is impossible, but with God all things are possible."
-The Holy Bible
New American Standard Version