If atheists ask theists for scientific evidence of God’s existence
wouldn’t it be just as fair for theists to ask atheists for religious testimony of God’s non-existence? Turn about is fair play, after all.
We have the "spotless Lamb of God" bound up in a human body. This is the One who loved us so much that He was willing to reduce Himself to a human egg. The Immaculate Conception was not just about the epitome of love and grace, it was about the willingness of the Son to travel the journey of the human experience.