The Prophet Muhammed (s) spent the last 23 years of his life as the last and final messenger of Allah (SWT). In those 23 years, he revolutionized an entire society with the revelation of the Holy Quran and his character, which then went on to change the world. It remains the fastest growing if not largest religion to this day, 1400 years later.
23 years is all it took for one man to make 2.3+ billion Muslims today. One perfect man. This wasn’t some fad or in the moment movement, this was one that lasted and will continue to last as long as Allah (SWT) wills for it to. If that’s not a miracle of God, I don’t know what is.