The true Church are made up of people,Who came to Christ Through faith. John 1:12, said, But as many as received Him, [Christ] to them He gave the power to become the Sons of God, even to them that believe on His Name: That is the only way to become a Child of God, and go to Heaven, when you die. John 3:16.For God so loved the World, that He gave His only begotten Son, that whosoever believeth in Him should not perish, but have everlasting life].The true followers of Christ, are marked by what they believe; about the Lord Jesus Christ: The Savior of the World.
People goes to Church, for many different reason, Judas was not saved, even though he was one of Jesus twelve disciples, and he walk and talk with Jesus, and lessen to Him preach, for about three years. Jesus called him a devil. Speaking of Judas who should betray Him. John 6:70-71 Jesus said, I have chosen you twelve, and one of you is a devil], How closer can any one get to eternal Life? Christ the Son of the Living God, did for us what we could not do for our self: He gave Himself a ransom for sinners.
The unsaved person cannot understand Spiritual things; The Standers of God Salvation is very high, no one but Christ, Who is God Son, and Our Savior, and representative to God, can meet the holiness God set for Heaven. that is why He gave Himself in the Person of His Son. Now God in His mercy can forgive us our sins and still remain Holy; Because Christ paid the price for our sin, when He died on the cross and God the Father is satisfied with the payment and mark paid in full, when you receive the gift of salvation; at no cost to you.