I've been married to my wife for over 57 years and you can say that she is the person I know best in this life, but not that we thoroughly know each other. After we die, that relationship will be gone. Our relationship with the Lord God is on an entire different level. This relationship can be perfect for these reasons: we can reach a complete mutual understanding with the Lord, we can become one with him through obedience, and the relationship can last forever! Therefore, establish this heavenly relationship with God to live on an exalted level.