Jude 1:3-4 - Jude's Purpose In Writing
3 Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you and exhort you that ye should earnestly persevere in the faith which was given once unto the saints. 4 For there are certain men crept in unawares without fear or reverence of God, who from beforehand have been ordained unto this condemnation, turning the grace of our God into lasciviousness and denying God who alone has dominion, and our Lord Jesus, the Christ.