'Knees' in the Bible

Then the king's countenance was changed, and his thoughts troubled him, and the joints of his loins were loosed, and his knees smote one against another.

And when Daniel knew that the writing was signed, he went into his house; and, his windows being open in his upper chamber toward Jerusalem, he kneeled on his knees three times a day, and prayed and gave thanks before his God, as he did aforetime.

And behold, a hand touched me, which set me upon my knees and the palms of my hands.