The sin of _____________________ (fill in the blank) affects our relationship with Christ. My sin of _____________________ is not as bad as his/her sin, we tell ourselves.
But, no matter what our pet sin happens to be, it will affect our relationship with Christ. As long as we justify our sin of greed, gossip, slander, adultery, homosexuality, critical spirit, etc. (the Bible calls all of these sin), our relationship with Christ will never be what it could be and should be. Sin separates. All sin separates. Yours is not worse than mine and mine is not worse than yours, though consequences do vary.
Because God is a forgiving God, a God of mercy and grace, we can ask for forgiveness but we must have repentant hearts. Repentance means turning from the sin and going away from it.The Scripture says, "If we confess our sins, He is faithful and just and will forgive us our sins and purify (cleanse) us from all unrighteousness." 1 John 1:9
If we desire a closer walk with Christ, we must confess our sins, turn from them, get in His Word, spend time in prayer and the God of peace will rule in our hearts. "Delight yourself in the Lord and He will give you the desires of your heart." (Psalm 37:4) When we truly delight in Him, our desires will become what He desires for us and our relationship with Christ is much sweeter.