'Feet' in the Bible

Jonathan crawled up on his hands and feet, with his armor bearer following him. The Philistines fell before Jonathan, and his armor bearer who was behind him also killed some.

She fell at his feet and pleaded, "Your majesty, let the guilt be on me alone, and please let your servant speak to you. Listen to the words of your servant.

She got up, prostrated herself face down on the ground, and replied, "Your servant would be a slave to wash the feet of your majesty's servants."