The letter reads:
You are one stupid [sexist slur]!
That pimp you married not only broke his oath, he sold his soul. Yours and Christian's Too! Adam's activities have hurt not only his country, but countless patriots and God fearing families. Therefore, although it might take time, he will be executed. But don't worry! You and Christian will be joining Adam in hell too! We find it blasphemous that you name the son of the devil Chistian [sic]!
On Twitter, Kinzinger wrote: "Here is the letter. Addressed to my wife, sent to my home, threatening the life of my family. The Darkness is spreading courtesy of cowardly leaders fearful of truth. Is the what you want @GOP? Pastors?"