A Blast from the Past on Theology

There is a segment of evangelicalism today that dislikes theology and theological orthodoxy and loves the church fathers. This is for them:

Let us keep in mind the sayings of the Lord and the letters of the apostles. They have both told us beforehand that there will be heresies, and in anticipation have given us warnings to avoid them. Since we aren't surprised that they exist, we shouldn't doubt that they are capable of doing shameful things. ... Heresies today won't tear apart the church by their perversion of doctrine any less than the Antichrist will persecute her by his cruel attacks (except persecution makes martyrs, but heresy only apostates). ... For the Apostle Paul says, "prove all things; hold fast that which is good." He considers heretics "not approved" and urges people to turn away from them.

-Tertullian, Prescription Against Heretics