Knudson: "The typological relation is the central means by which particular epochal horizons are linked with later horizons in redemptive revelation"
“Typology is symbolism grounded in the text with a prospective reference to be fulfilled in a later epoch in biblical history (it is both necessary and essential in character). Typology involves recognizes the organic relationship between events, persons, and institutions. The early event, person, or institution is a “type” and the later is the “anti-type.” The typical relationship between the first person, event, institution and second is fundamental (necessary) and essential in some way. The typological relation is the central means by which particular epochal horizons are linked with later horizons in redemptive revelation. It links the present to the past and the future. It is found within the organic nature of Scripture that God promises and fulfills these promises.
“We find in Scripture a difference in quality between former acts of God and new ones (temple). In other words, the fulfillment of God’s promises would be even greater than the original recipients of the original promise could have foreseen. In addition, typology allows for the promises of God to often have two or more fulfillments, one relatively immediate and the other at some distance point in the future (prophetic literature). However, some may object to this notion of typology as allegory (fanciful interpretation). The difference is that typology is textually and historically warranted (found in the text). In other words, it takes a legitimate idea, person, event, institution in Scripture and traces its movement from promise to fulfillment, whereas allegory is not textually based, but finds some unrelated point and seeks to create an illegitimate connection (scarlet cord of Rahab).” – Chad Knudson, Cornerstone Bible Church, Aurora, CO; The Necessity of Biblical Theology