John 13:3-5

Jesus, who knew that the Father had given Him complete authority, [also] knew that He had come from God and was [about] to return to God.

1 Timothy 5:10

having a reputation for doing good deeds, [such as] bringing up children, showing hospitality to strangers, washing the feet of the saints [i.e., God's holy people], assisting people in trouble and devoting herself to doing all [other] kinds of good deeds.

Treasury of Scripture Knowledge

Summary

And she arose, and bowed herself on her face to the earth, and said, Behold, let thine handmaid be a servant to wash the feet of the servants of my lord.

Bible References

To wash

John 13:3
Jesus, who knew that the Father had given Him complete authority, [also] knew that He had come from God and was [about] to return to God.
1 Timothy 5:10
having a reputation for doing good deeds, [such as] bringing up children, showing hospitality to strangers, washing the feet of the saints [i.e., God's holy people], assisting people in trouble and devoting herself to doing all [other] kinds of good deeds.