What god do you worship?

As far as I am aware, it is Catholics who have the biggest and most significant miracle that can be documented essentially proving the religion.

Our Lady of Fatima (The Miracle of the Sun) in 1917 (watch first 10 minutes)

The miracles at Fatima included the sun appearing to do movements outside the laws of nature, a mass healing event, and all rain water from the storm being evaporated instantly.

This miracle was prophesied to happen 2,000 years ago in Revelation.

Catholic teaching is that Mary is the New Ark of the Covenant. This Catholic teaching can be traced back nearly 2,000 years. Please watch this video at the 39:49 timestamp I have marked to see the relevant Bible passages that are the basis for this Catholic teaching.

Our Lady of Fatima (The Miracle of the Sun) was in the Bible in Revelation 11:19 & Revelation 12:1.

Revelation 11:19: "And the temple of God was opened in heaven: and the ark of his testament was seen in his temple, and there were lightnings, and voices, and an earthquake, and great hail."

Revelation 12:1: "And a great sign appeared in heaven: A woman clothed with the sun, and the moon under her feet, and on her head a crown of twelve stars:"

Mary, the New Ark of the Covenant, is seen in the sky and she is able to stop the storm that was occurring. The great sign was the sun doing movements outside the laws of nature. The original scrolls of Revelation did not have chapters and verses. So this was originally just two continuous sentences. These verses are describing the same event. This has been well documented.

The reason for animal sacrifices in the Old Testament had to do with payment/atonement for sin. It is supposed to feel so uncomfortable to sacrifice an innocent animal that you will never want to sin again. It shows the seriousness of sin. The circumcision in the Old Testament (Brit Milah) was also different than the modern circumcision that jews and certain White Americans do to their kids (Brit Periah). The modern circumcision from 200 AD cuts off 10x as much of the foreskin as the original Brit Milah circumcision did. Jesus was the final sacrifice and because of this we are no longer required to sacrifice animals or cut our foreskins. The reason that God created humanity was as a spiritual test to see which of us would be worthy to replace the fallen angels who betrayed Him. God does not want such a thing to happen ever again. That is why it is so difficult to get to Heaven and why few are saved.