'Knees' in the Bible

Then his face changed and his thoughts terrified him, and {his hip joints gave way} and {his knees knocked together}.

Now {when} Daniel realized that the document was signed, he went to his house ({now he had windows in his upper room that were open} toward Jerusalem), and three times {daily} he knelt on his knees and prayed and [gave] praise before his God, {just as} he had been doing {previously}.

And look, a hand touched me and it roused me to my knees and the palms of my hands.