Kneeling to pray is found throughout the Bible. Most importantly, Scripture tells us that Jesus Himself kneeled to pray to the Father. Kneeling before a king when making a request to him is an ancient tradition. Kneeling is a symbol of humility by the petitioner, and gives honor to the ruler. By submitting to the holiness and authority of God, kneeling is a meaningful position for us to come before Him. When you kneel in prayer, you are also worshiping the Lord as you pray.
“The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise" (Psalm 51:17). In that quiet worship, we find faith for the Holy Spirit to guide our prayers. “And he who searches the hearts of men knows the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God" (Romans 8:27).