The question is often asked, “How could a loving God ever send anyone to Hell?”
If you don’t want to accept God’s method of salvation through Christ alone, obey Him and live for Him in this life, why would you want to do it for eternity? Sending the rebellious person to Hell for his sins is God’s merciful way of giving that person exactly what he desires: a life forever separated from God.
CS Lewis wrote, “I willingly believe that the damned are, in one sense, successful rebels to the end; that the doors of Hell are locked on the inside.”
And anyone not found written in the Book of Life was cast into the Lake of Fire (Revelation 20:15).