“United to one another in love the saints have fellowship in each other’s gifts and grace and are obliged to perform those public and private duties which nourish their mutual good, both spiritually and physically.” Westminster Confession of Faith, Chapter 26, Article 1.
When Christ claims us as his own, he also welcomes us into a family – a large, gifted family. And we begin to benefit from the wisdom, love and experience of others. We belong to each other, and mutually support one another.
Ecclesiastes 4:12 And if one prevail against him, two shall withstand him; and a threefold cord is not quickly broken.
We really do need each other as Christians. We do not stand alone. We are to love one another, forgive one another, encourage on another. This is why private, stand-off-ish, Lone Ranger Christianity is so prone to doubt and discouragement – they deprive themselves of the blessing, support and defense of their brothers and sisters.
True, interpersonal fellowship is vital to the health of a Christian and the church. We need to know one another in order to help one another.
This fellowship or communion of the saints exists in every true church. So, enter in, benefit from knowing and being known by the family of God. “A threefold cord is not quickly broken.”