"A great sign appeared in heaven: a woman clothed with the sun, with the moon under her feet and a crown of twelve stars on her head. 2 She was pregnant and cried out in pain as she was about to give birth."
First off, I want to note that there is some disagreement about the placement of the last verse in the prior chapter, with some of the commentary I read suggesting that Revelation 11:19 seems more fitting as the first sentence in chapter 12. Early manuscripts of the Bible were written in 'scripta continua' or lines of letters unbroken by spaces or punctuation, and the books of the Bible were not separated into chapters and verses until the 13th and 16th century, respectively, so it's easy to see how there might be a conflict between one manuscript or another with regard to where these divisions were placed.
Biblehub.com notes that Psalm 104:2 describes God in clothing of light, just as the woman above is said to be 'clothed by the sun': "He wraps Himself in light as with a garment; He stretches out the heavens like a tent." Many people infer this woman described to be Mary, the mother of Christ, when they read these first two verses of this chapter. Most of the writers I read seem to agree that the woman is giving birth to Our Savior, Jesus Christ. Because the church was referred to as a woman in the Old Testament, some writers believe that the woman may symbolize Israel along with or instead of Mary. Many of the commentaries on the first verse compare it with Genesis 37:9-11 where Joseph dreams that the sun, moon, and eleven stars all bow down to him. Mary's crown has one more star than his, but other than that these images are similar.Writers have different opinions about what the moon under the woman's feet means. Some commentaries that I read say it symbolizes false religions or apostasy. The writer at bibleask.com said that it refers to the sacrificial system in the Old Testament and referenced Hebrews 10:1, which says, "The
law is only a shadow of the good things that are coming--not the
realities themselves. For this reason it can never, by the same
sacrifices repeated endlessly year after year, make perfect those who
draw near to worship."
A Prayer for Salvation from Christ:
Lord Jesus, I confess my sins and ask for your forgiveness. Please come into my heart as my Lord and Savior. Take complete control of my life and help me to walk in Your footsteps daily by the power of the Holy Spirit. Thank you Lord for saving me and for answering my prayer.
A more detailed step by step process:
https://www.wikihow.com/Accept-Jesus-Into-Your-Life