'Knees' in the Bible

So the slave fell on his knees and begged him, saying, ‘Have patience with me and I will repay you everything.’

And a leper came to Him, begging Him and falling on his knees before Him, saying, “If You are willing, You are able to make me clean.”

Seeing Jesus from a distance, he ran up and bowed down before Him [in homage];

They kept beating Him on the head with a reed and spitting on Him, and kneeling and bowing in [mock] homage to Him.

But when Simon Peter saw this, he fell down at Jesus’ knees, saying, “Go away from me, for I am a sinful man, O Lord!”

Then falling on his knees [in worship], he cried out loudly, “Lord, do not hold this sin against them [do not charge them]!” When he had said this, he fell asleep [in death].

For this reason [grasping the greatness of this plan by which Jews and Gentiles are joined together in Christ] I bow my knees [in reverence] before the Father [of our Lord Jesus Christ],

So then, strengthen hands that are weak and knees that tremble.