During the ascendancy of progressive thought in the early 20th century, G.K. Chesterton said something to the effect of (and I'm paraphrasing here):
I've been asked many times why I cling to an ancient and antiquated faith. I believe it precisely because it is ancient and antiquated. Unlike any other belief system it has been tried, tested, persecuted, prosecuted, assailed, scorned, and subjected to the greatest scrutiny, and yet in the face of all that, it has endured.
Good quote, and very true. True Christianity has stood the test of time because our God is timeless and protects us, and keeps us until that day.