" For this reason I kneel before the Father." ( Ephesians 3:14)
To bow our knees before God, as Paul literally puts it in Ephesians 3;14, is to know our place before Him. His holiness wills us to bow down low before Him. Our own unworthiness makes us crumble before God. We are like dust to the heavenly scales, yet God has compassion on us. He sees us through His grace when we're humble and small before Him. Then God, in turn can fill us, and use us for His glory.
" Oh come, let us worship and bow down; Let us kneel before the LORD our Maker." Psalm 95:6 (NKJV)