What does Revelation 7 really teach about the 144,000 and the great crowd?

Rev 7:4 gives a precise number — 144,000. Rev 7:9 describes a second group too large to count. Rev 5:9-10 says the 144,000 rule as kings "over the earth." If everyone faithful goes to heaven, who do they rule over? Kings need subjects. Key scriptures: Psalm 37:29 (righteous live forever ON the earth), Isaiah 45:18 (earth formed to be inhabited), Matthew 5:5 (meek inherit the earth), Matthew 6:10 (God's will on earth as in heaven). Two groups. Two destinations. One Kingdom. What scriptures stand out to you? Acts 17:11 — nwtprogress.com