So im reading The Foosteps of the Messiah by Dr. Arnold G Fruchtenbaum and he says something that I want to test and see if it is true but dont know enough logos or resources to check.
He says and I quote."In answer to the first point, Matthew 24:36 begins with the word But, which in Greek is peri de. The peri de construction in Greek is a contrastive introduction of a new subject and, hence, is often translated as: But concerning (1 Cor. 7:1; 8:1; 12:1; 16:1; 1 Thes. 5:1; etc.). The usage of this construction points to the introduction of a new subject. So yes, He has been discussing the Second Coming until this point. However, the peri de means that He is now introducing a new subject, and that is the Rapture.
So my question is whats the best way and how do I test to see if Peri de does mean a contrast and change in subject? Just looking up the strongs doesn't say anything about it and I looked on the internet and cant find anything.