What does D.A. Carson mean about the wrath and the love of God shown in the OT "in experience and types" and made clearer in the NT?

From the *gospel translations* Wiki page on God's Love and God's Wrath written originally for the journal [*Bibliotheca Sacra*](https://en.wikipedia.org/wiki/Bibliotheca_Sacra) by D.A. Carson: >The reality is that the Old Testament displays the grace and love of God **in experience and types**, and these realities become all the clearer in the New Testament . Similarly, the Old Testament displays the righteous wrath of God **in experience and types**, and these realities become all the clearer in the New Testament. ... (emphasis mine)