The 17th century commentary on Isaiah 22 by Jacobus Tirinus from the previous post didn’t outline an elaborate Eliakim-Peter typology. It is so brief it defies interpretation, apart from his poor understanding of Scripture, but as with any historical inquiry, there are other concerns. Anachronism is an enemy of understanding and we should be cautious of projecting ideas familiar to us back into a time when they were unknown and drawing unwarranted conclusions. We should also be careful to discern whether Tirinius or others do the same. Upon examination, we’ll see Tirinus does and we’ll also see a deafening silence in the fathers regarding the Eliakim-Peter link.
As a reminder, the English text of his commentary (via Google Translate), stated the following: “…The Messiah is allegorically represented by Eliakim, says Cyril. & Theodoretus. And here St. John observes [in Revelation 3:7] where he speaks of Christ, he who has the key of David opens and no one closes. And Christ promised to delegate the same key to his Vicar Peter, [in Matthew 16:19]. I will give to you the keys of the kingdom of heaven.” – Jacobus Tirinus (c. ~1645 AD)