Never be afraid to say I don’t know. No matter what people tell you or ask you. Someone told me that if a preacher ever said “I don’t know” then he wasn’t worth listening too. For me, that’s someone looking for a precanned religion with a god in the box that pops out on Sunday just to make people feel good. There is no one on this earth as a human that knows everything and thank God for that. This allows us the free will to pursue and learn the truth. The beauty of God is that we don’t and could never in our lifetime fully comprehend everything about Him and yet He created us and gave us that gift of finding Him on our own.
I personally don’t hold to the Calvinist theology that we are predestined to either go to heaven or hell when we are born. However I do believe that God has the knowledge of every decision and every outcome that we make with our own free will and how it interacts with everyone else. I fully believe that allowing ourselves to strive to give our will back to God and allow Him to guide us will not only allow us into heaven as salvation is the only way to do that, but allow our time on earth to benefit and love more people than we can possibly know.