I would add in Romans 16:17-18 with John 17 and I think you can take it from there.
Can’t you just answer the question. It is a simple yes or now question. Do YOU believe that your salvation is in jeopardy if you don’t have a belief on the specific days of the week on which Jesus died and was buried? Yes or no. I don’t want to play games. I just asked a simple question. Is your life that boring?