Jude 1:3-4 - Jude's Purpose In Writing
3 Beloved, while giving all diligence to write to you, I found it necessary to write to you concerning the common salvation, exhorting you to contend earnestly for the faith which was once delivered to the saints. 4 For there have stealthily crept in certain men who were of old appointed beforehand for this condemnation, ungodly men, turning the grace of our God into wantonness, and denying the only Sovereign, and our Lord Jesus Christ.