All people who deny that God created the world, and who therefore deny the existence of God, are evil. They are atheistic materialists. They are all evil, because everything good that is good not only in an earthly way but also in a spiritual way comes from God. Therefore people who deny the existence of God do not want to, and therefore cannot, accept anything good from any other source outside what is their own. What is their own is the craving of their flesh. Anything that comes from that craving is spiritual evil, however good it may appear from an earthly perspective. People like this are evil in a theoretical way.
There are also people who are evil in a practical way. They are people who have no use for the divine precepts that are summed up in the Ten Commandments. These people live like outlaws. They too deny God at heart (although many of them confess him with their lips), because God and his commandments are united, which is why the Ten Commandments are called “Jehovah there” (Number 10:35-36; Psalms 132:7-8).
The following two propositions will make it more obvious that evil people have no faith:
a. Evil people have no faith, because evil relates to hell and faith relates to heaven.
b. All People in Christianity who are dismissive of the Lord and the Word have no faith, no matter how morally they behave or how rationally they speak, teach, or write, even if their subject is faith.
We will take these points up one at a time.
from True Christianity, Section 382