When we refuse to believe God and His promises, we slow turn away from Him. Hebrews 3:12 says, See to it, brothers and sisters, that none of you has a sinful, unbelieving heart that turns away from the living God. Our relationship with God is the most important thing. Just like any other relationship in our lives, it takes work to maintain. If we are not spending deliberate time working on our relationship with God, the relationship suffers. We must commit ourselves to continuously working on building a closer relationship with God. Without that closeness we lose sight of His will in our lives.