In the sermon titled 'Contend for the Faith,' David Green highlights Jude's urgent call for believers to defend their faith. Although Jude initially intended to write about common salvation, he shifted his focus due to the infiltration of false teachers in the church. These individuals were using God's grace to justify sexual immorality, posing a significant threat to the integrity of the faith. Jude's exhortation is a reminder to contend earnestly for the faith that has been handed down to the saints, emphasizing the need for vigilance against those who distort religious teachings.

And he says he says I was making every effort verse 3 to write you about our common salvation I felt in this necessity to write to you exhorting that you contend earnestly for the faith which was once for all handed down to the saints. For certain persons have kept in unnoticed. There is a problem. There was a terrible problem. False teachers had infiltrated that group of people.

False teachers had infiltrated that church or churches and were using God's grace as justification for sexual immorality. Rather than writing about salvation as he planned, Jude has to shift his focus to urge believers to defend the faith.