"He who believes in the Son has everlasting life; and he who does not believe the Son shall not see life, but the wrath of God abides on him.” John 3.36
A marriage only works out when there is surrender of body, soul and spirit. Body mates with body, soul with soul and spirit with spirit.
The belief in God is no different. There must be total surrender of body, soul and spirit. If one of then is lacking, then you lack belief. And if there's no belief, the wrath of God remains.