Hebrews 10:26-27, 37-39

For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more a sacrifice for sins, but a certain fearful expectation of judgment, and a fierceness of fire which shall devour the adversaries.

For yet a very little while, He that cometh shall come, and shall not tarry. But my righteous one shall live by faith: And if he shrink back, my soul hath no pleasure in him. But we are not of them that shrink back unto perdition; but of them that have faith unto the saving of the soul.