Islam and Christianity and Judaism are indeed related and any muslim who understands his/her belief will readily recognize this. The main difference is s the understanding that the monotheistic revelations to mankind are continuous w/o differing in belief, tho' somewhat in practices. Muslims...
I can only speak as a revert. I do not think we Muslims question the teachings of our religion. Ihis is due to the fact that everything begins w/creed "No God but Allah, Muhammad is His messenger". Those who came before us on this creed have done an excellent job of clarifying this religion...
.Asalaamualaikum sister,
May Allah reward you wq/guidance in this life and paradise in the next! Ameen. I reverted 28 years ago, am new to this forum however. Congrats and welcome