All of Jesus` parables were `to confirm the promises made to the fathers...` (Rom. 15: 8) and refer back to the Old Testament with quotations from there.
Revelation -
To reveal Christ to us in Revelation, there are three hundred & thirty references to the figures, shadows, symbols, types, patterns, persons, & buildings of the Old Testament.
This unveiling is the culmination of all the truths expressed from Genesis to Revelation, for all scripture is centred on one purpose and that is to reveal Christ to us in all His Glory.