Our relationship with God is not unlike our relationship with our spouse or best friend. In order for it to grow, we must intentionally and actively communicate with Him. God speaks to us through His Word, through the Sacraments, and through those whom He chooses to use as His instruments. We speak to God through prayer. Initiated by God's gracious act of Jesus' sacrifice on the cross, our relationship with Him is now reciprocal, as we respond to His love and reflect it to the world. In doing so, we fulfill the second part of the Great Commandment - to "love your neighbor as yourself" (Matthew 22:39). The Commandments, then, also become a guide on our journey.
From "The Calling - Live a Life of Significance" by Kurt Senske, page 32, Concordia Publishing House