IV. Hell

From The Catechism of the Catholic Church

1033
We cannot be united with God unless we freely choose to love him. But we cannot
love God if we sin gravely against him, against our neighbor or against
ourselves: “He who does not love remains in death. Anyone who hates his brother
is a murderer, and you know that no murderer has eternal life abiding in
him.”⁶¹⁰ Our Lord warns us that we shall be separated from him if
we fail to meet the serious needs of the poor and the little ones who are his
brethren.⁶¹¹ To die in mortal sin without repenting and accepting God’s
merciful love means remaining separated from him for ever by our own free
choice. This state of definitive self-exclusion from communion with God and the
blessed is called “hell.”