Although this sounds reasonable, it is inaccurate. As we discussed in our earlier conversation, it does not matter what method of salvation we think is correct. The method God has established is the only method. There are no exceptions. An example of this would be a lock on a door.
Universal truths are things that are true throughout the universe and throughout time.
The laws of physics are universal truths. They are consistent and universal. For example, even if you do not believe in gravity, if you walk off a cliff, you will fall. I have to believe the God who created an orderly and precise universe, which is full of universal truths, also created a spiritual realm with universal truths. God has established His requirements and we must follow them if we wish to enter Heaven.