Great post, pbiwolski.

in fact, it is very tough to fit Matt. chapters 5-7 ANYWHERE in Scripture. It doesn't fit in with the OT law and it doesn't fit in with church doctrine.

The key is the Kingdom of Heaven.
Jesus Christ is laying down the groundrules for the physical, literal, visible, Jewish, Messianic, earthly Kingdom known as the Kingdom of Heaven in the book of Matthew.

Failure to recognize the uniqueness of the Kingdom of Heaven in the book of Matthew leads to all kinds of pitfalls.