Can typology be supported by those who advocate for so-called literal interpretation of the bible? For example, Isaac being brought to the alter for sacrifice and God subsequently providing the lamb in place of Isaac is not explicitly stated in the bible as having ante-typical fulfillment in Christ. (If I am wrong, consider the other many typologies that Christians take for granted). But most evangelicals interpret this historical event as being prophetic. But nowhere are we given explicit evidence that it is prophetical. So, again, is so-called literal interpretation "allowed" to interpret this event as anything other than a historical event? (Not the best example I'm sure so please be charitable).
Typology is not the same thing as
allegory. Paul uses the Gk word ἀλληγορέω (allegoreo), Gal.4:24, but not in the sense that the word took in later common interpretive method. Rather, he seems to mean what we generally regard as typology, as he extracts the Christological essence of the OT text to prove the NT fulfillment.
Why does he do this? I'd say he does it because that's how Jesus himself interpreted the OT and taught his disciples to do it. Jesus proves he is the Messiah not by pointing to his birthplace, pedigree, or other discrete "fulfillments," but rather by preaching the arrival of the New Covenant reality from the Scriptures as a thing tied to his Person. The people who encountered him began to recognize by his teaching that the OT was everywhere pointing to fulfillment, and that fulfillment coalesced around this Prophet.
Allegory is leaping fantastically from a text to flights of spiritualizing fancy. It is not truly anchored to the text, it is not "literal" at all. Ethical notions or heavenly concepts, thought to be true but who knows where they really come from, are assigned to elements of biblical text on nothing more than a pretext of plausibility. The limit is nothing but the imagination of the preacher.
Biblical typology is quite different. For one thing, it is prophetic by nature and exhibits a relentless focus on the coming kingdom and Christ. There isn't some typological interpretation of the OT that has in view events of interadvential world history, or a believer's life, or the progress of one church-denomination.
Biblical typology is never separated from a strong tie to the text itself, its actual terms and meaning, and the events which it narrates or speaks to in an historical connection for its own time. One of the early, damaging divides in the history of interpretation was a cleavage between the "literal meaning" and an applicational derivation, usually cast in terms of NT fulfillment or ethics. But, because many early-church teachers grew uncomfortable with what they saw as
unethical or
sub-Christian elements to the OT stories, they tended to minimize that part of preaching, and run off to find some a quick transition to a (or any) NT subject.
But what a study of apostolic preaching shows (in Acts or Hebrews for example) and teaching shows (in the Epistles) where the OT is used for support, is a very robust awareness of the OT text, in its context, in its OT setting, and exhibiting a tremendous familiarity with the
intertextuality of the OT literature. Some modern writers have suggested that the apostles were uniquely gifted to
repurpose OT texts away from their original intent, in order to make them useful for a spiritual NT age; but in this they only show how little they understand Jesus' own and his apostle's hermeneutic.
For many, their dispensationalist a priori conviction shines through, when they then say that a NT-age preacher today cannot imitate the apostles, because we do not have the requisite "inspiration." To quote one well-trod rebuttal of that idea, "We do not
read Jesus into the OT; instead we
refuse to read him out." The Scriptures testify of Jesus, Jn.5:39. "And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself," Lk.24:27.