If I understand rightly, RH preaching is now common at WTS, which is one of the many reasons why a prominent OPC pastor, himself a graduate of WTS, told me he no longer recommends this seminary to anyone. Isn't the Reformed pastor supposed to stick to expository preaching?
If you reject RH preaching completely and only utilize historical grammatical exegesis, the Gospel of John is going to read like a bunch of gobbledygook!
Take John chapter 4. In Jesus discussion with the Samaritan woman all of this responses to her literal questions are in the historical redemptive context. She was talking about literal water, He is talking about spiritual or "living" water. She is talking about a literal husband, He is talking about a spiritual husband.
Example:
Jesus is talking about two different places or churches of worship. In 2 Kings 17:24 we read that at the time of the Assyrian dispersion that when God sacked the kingdom of Israel He removed all of the Israelites (except for the tribe of Judah, verse 18) and dispersed them all over the world. In their place the Assyrians brought people from "5" foreign lands and settled them into the towns of Samaria. And when they first lived there, they did not worship the Lord. So the Lord sent "lions" among them and they killed some of the people. So the king of Assyria gave the order that they appoint one of the priests of the Jews be sent to Samaria to teach the new people what the god "of the land" requires" so that the killings would stop. Now this priest taught them the religion and the "rituals" of Judaism.
These new multicultural Samaritans then mixed the "rituals" of Judaism with the pagan beliefs of the "5" nations that were placed in the land. In other words they married the pure religion and worship of God with 5 "husbands"! They married Judaism with the gods of Babylon, Avva, Hamath and Sepharvaim. This new marriage produced a religion of works righteousnessor justification with the rituals or liturgy of Judaism. Very much like the Roman Catholic church in our time. Israel had committed and played the harlot with these 5 husbands.
Now in Deuteronomy the Jews were instructed that they were only to worship in the place that God designated for them to worship. That was the temple on the mountain in Jerusalem. These Samaritans worshiped their "husbands" on mount Gerezim. And even though they had 5 husbands, they did not have the real Husband. The only real Husband they were appointed to have was sitting on the well with the woman from Sychar!
Now this woman should have been concerned. The Israelites that were living in Samaria were supposed to be worshipping with their bridegroom in Jerusalem. She should have been concerned with being consumed or eaten by lions. But here, the real "Lion of Judah" is sitting at the well, sharing the Gospel to one of His sheep.
And then, at this "well", this woman suddenly "sees" the well of living water sitting in front of her as Jesus reveals Himself as the messiah. As Hagar, who is confronted with our Savior, "The Angel of the Lord" by a spring of water (Gen 16:7-13), the woman at Sycars well exclaims as Hagar did, "you are the the God who sees me"! And then in Genesis 21:19, "Then God opened her eyes and she saw the well of water". The woman then leaves her empty stone pot at the well and runs to tell the story. She no longer needs to draw literal water from the well, for she has just consumed living water provided by "the God who sees me".
This story, exegeted in the historical redemptive context, reveals the true expository of what is taking place in John 4. It uses the analogy of faith. Interpreting the text as the intent implies.
We as humans tend to interpret the text literally like the woman does. All of her questions are literal. All of our Lords answers are historical redemptive or symbolical.