'Knees' in the Bible

And falling to [his] knees, he cried out with a loud voice, "Lord, do not hold this sin against them!" And [after he] said this, he fell asleep.

But Peter sent [them] all outside, and, falling to [his] knees, he prayed. And turning toward the body, he said, "Tabitha, get up!" And she opened her eyes, and [when she] saw Peter, she sat up.

And [when he] had said these [things], he fell to his knees [and] prayed with them all.

And it happened that when our days were over, we departed [and] went on our way, [while] all [of them] accompanied us, together with [their] wives and children, as far as outside the city. And [after] falling to our knees on the beach [and] praying,