'Knees' in the Bible

And when they came to the crowd, a man came to him, falling on his knees before him, and saying,

And there comes to him a leper, beseeching him, and falling on his knees to him, and saying to him, If thou wilt thou canst cleanse me.

But Simon Peter, seeing it, fell at Jesus' knees, saying, Depart from me, for I am a sinful man, Lord.

For this reason I bow my knees to the Father of our Lord Jesus Christ,

Wherefore lift up the hands that hang down, and the failing knees;