The church is the primary context for our sanctification, which is just another way of saying that God’s “plan A” for our progressive transformation and spiritual growth is the participation in a local church body. It is another great reminder that we exist as interdependent creatures. Even before we take into account the effects of the fall and sin, it is not good that man be alone.
Then the LORD God said, “It is not good that the man should be alone; I will make him a helper fit for him.”
Genesis 2:18 ESV