text: It probably has to do with the Biblical understanding of what it means to kneel.
  
  "Come, let us bow down in worship, let us kneel before the LORD our Maker."  Psalm 95:6.
  
  "For this reason I kneel before the Father, . . ."  Ephesians 3:14
  
  ". . . all who go down to the dust will kneel before him, . . ." Psalm 22:29
  
  "I will give it all to you," he said, "if you will kneel down and worship me."  Matt. 4:9
  
  " . . . so that at the name of Jesus everyone in heaven, on earth, and in the world below will kneel ..."  Philippians, 2:10