And truly our fellowship is with the Father and with His Son Jesus Christ. 1 John 1:3
Every married couple has experienced the temporary loss of fellowship. When a word or action offends a spouse, there is a loss of closeness in the relationship. The root meaning of fellowship is “oneness”: two become one in marriage. But sin can break that oneness until the offense is dealt with through confession and forgiveness. The marriage doesn’t end because of the offense, but intimacy is short-circuited.
It’s the same with us and God. Our sin separates us from God until it is dealt with. God sent Jesus into the world to deal with our sin so we might be reconciled to God and have our oneness with Him restored (2 Corinthians 5:19). What happens if we sin as believers? We are not lost; our relationship with God is not set aside. But our fellowship with Him is interrupted until we say about our sin what God says about it (that is what confess literally means—“to say the same thing”). Because of Christ’s sacrifice for our sin, we can be forgiven and our fellowship with God restored (1 John 1:9).
Don’t let sin short-circuit your fellowship with God. Confess and be reconciled to Him.
The fellowship of God is delightful beyond all telling. A. W. Tozer