Revelation seven (7), explained verse by verse, shows what is behind the seal of God and the sealing process. God is calling for people to turn to Him and repent from sin and worldliness. This is exemplified by Ezekiel telling of his visions and the Angel setting a mark on the foreheads of those who sigh and cry after the abominations done in Israel and Jerusalem. Study RevelationWithDaniel. It’s amazing!