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 sacrifice for sins, but a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.

For yet a little while, And he that shall come will come, and will not tarry. Now the just shall live by faith: But if any man draw back, my soul shall have no pleasure in him. But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.