Jesus organized the church, which is His vineyard. He commands all to go into the vineyard and work. All who are united to Christ by faith, and are thus members of His mystical body, should be members of His visible church.
In vain I have searched the Bible, looking for examples of early believers whose lives were marked by rigidity, predictability, inhibition, dullness, and caution. Fortunately, grim, frowning, joyless saints in Scriptures are conspicuous by their absence. Instead, the examples I find are of adventurous, risk-taking, enthusiastic, and authentic believers whose joy was contagious even in times of full trial. Their vision was broad even when death drew near. Rules were few and changes were welcome. The contrast between then and now is staggering.