Jude’s exhortation to contend earnestly for the faith is a concept packed with vitality, hyper-vigilance and struggle that has internal, external and eternal effects. The battle for inerrancy of scripture, preservation of the faith without dilution, rejection of apostasy, authority of the Bible and identification of false teachers demands an understanding of essentials and nonessentials of the faith. See how the historical emergence of fundamentalism came about to counter the effects of modernism in Christian theology.