The likes of Tim Keller would say, Christianity is not a religion, it's a relationship.
That's not true, according to James 1:27.
Right religion produces right relationship.
Verse 2: καθαίρω , pertains to suffering.
1 Corinthians 10:16, κοινωνία koinonia, share, participation, fellowship, in the Lord's Supper. Holy Mass.