10. In what way is the observance of the fourth commandment a sign?

The Sabbath is a sign of God’s creative power—both His power in creating Planet Earth and His power in recreating our hearts in His image. In the last tumultuous days of Earth’s history, the Sabbath will be a sign and seal, separating those who accept the God who created the heavens and earth from those who receive the Mark of the Beast. Revelation’s most urgent appeal to humanity is a call to worship our Maker on the day He has set apart as holy. The Sabbath is the seal of the salvation we have by grace through faith in Christ. Thus, the Sabbath is both a sign of God’s creation as well as a sign of God’s redemption (Deuteronomy 5:12-15).JTL5 5.4