“Going to church” is not a matter of going to the building as some sort of check off list. It is not a matter of “works religion.” Gathering together with the saints is much more than that. The saints in the first century did so (Acts 20:7), and Paul exhorted the saints in Corinth to do the same (1 Corinthians 16:1-2; 4:17). Those who love the Lord won’t be any place but where the Lord desires, and for the reasons the Lord desires.
Here are some points for your consideration: 1) Matthew 16:13-19—Jesus “built” (established) His church. 2) Ephesians 1:22-23—Jesus is the head of His church, His body. 3) Ephesians 4:4—There is one body (church). 4) Ephesians 5:23-32—The church is the saved. Paul wrote to the local body (in Ephesus); he did not delineate between the local, visible, invisible, and/or universal church. 5) Hebrews 10:19-31—After a lengthy discussion on the differences between the Old Covenant and the New Covenant, the Holy Spirit gives a number of exhortations in this section: a) the saints are to draw near with a true heart (10:22), b) the saints are to hold fast their confession (10:23; cf. Romans 10:9-10), c) the saints are to consider one another (10:24), d) the saints are not to forsake (abandon) the assembling together (10:25); this is your “go to church.” e) to sin willfully is to crucify the Son of God afresh (10:26), f) it is a fearful thing to fall into the hands of the living God (10:31).
What’s hard to understand? For one who doesn’t want to understand, maybe it’s the heart that is hard.