Dear Jil, let me state from onset it’s a double jeopardy situation. A “Thus saith the Lord” marriage proposal is. It actually dates back over 35 years in Pentecostal circles. Founded on teachings about submission to the will of God. The language comes from 17th century King James Bible. Lends prophetic gravitas to the proposal. It does suggest God is linguistically anachronistic though. “This is my declaration” says the same thing.