In Matt.12:39-40 Jesus shows them that a great fish swallowed Jonah. He then tells them it was a sign of his being 3 days in heart of the earth. That had not happened yet. I don't believe that the fish was the issue. The issue was 3 days in burial. The types in the O.T. were pictures meant to convey a understanding of a point that would reveal a revelation of Jesus Christ. once the point was made we were not expected to add more. it would be silly to add something like Jesus is a big fish. The point was made ,he would be buried 3 days. in Num. 21:8-9 we have another type. In Jn.3:14 The emphesis is not the serpent-- the type was pointing to Jesus to be lifted upon a cross that was the revelation of Jesus Christ. He doesn't identify with the serpent. The serpent always identified with satan. Rev.12:9 We must be prayerful to not add to the shadows and types more than what they are saying to us. Many are afraid to even study these types because of fear of wrong interpretation. The truth of a type is clear when it points to the righteousness and not to darkness. We must remember that the pointing to Jesus is to bless us with a understanding of who he is and how God revealed him before he ever came to do his wonderful work. it is not the type but what the type points to that matters. Jesus must be seen only in glorious light for in him was no darkness at all. Jude 1:3-8
