It's how one see's what Gods will is by the heart.
In orthodox Christianity, they teach of the OT tithing. When the church receives such, they impart their parts for the elites and the physical (buildings, organizational costs, etc.) and what's left, an apportion given to the poor and sick.
If one is not considered a "church member" and apportions a greater part for the needs of the poor, skipping the elite and physical demands (of the church), then who has done the spiritual will of God?
The "church" of Christ are the saints, not as orthodoxy says, but as the individuals do. To add a mans name after the word "saint" is made to see what is not correct.
Names given to the worldly are very deceptive, for they divert our thoughts from what is correct to what is incorrect. Thus one who hears the word "God" does not perceive what is correct, but perceives what is incorrect. So also with "the Father" and "the Son" and "the Holy Spirit" and "life" and "light" and "resurrection" and "the Church (Ekklesia)" and all the rest - people do not perceive what is correct but they perceive what is incorrect, unless they have come to know what is correct. The names which are heard are in the world [...] deceive. If they were in the Aeon (eternal realm), they would at no time be used as names in the world. Nor were they set among worldly things. They have an end in the Aeon.- Gospel of Philip
An atheist of good heart has a better chance of understanding what is driving his heart than those who follow the men who claim that the church creates a good heart.
The church doesn't have the ability to judge others.
Matthew:
17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
18 A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
19 Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
20 Wherefore by their fruits ye shall know them.
21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Jesus starts this with:
Judge not, that ye be not judged.
The word atheist is as misunderstood as the word "Christian". God is love. Love is of God.
And even those who use the word "Christian" will be judged. The "name" is love. Not just of their own, but of all others whom love.