Spiritual seal, I bet, so the angels of terror don’t mistake us for followers of Satan.
Comforting. Even though the famine, earthquakes, and blasting heat from the sun or general suffering will be experienced. Those sealed by God do die. Many, many die. However, those who are left alive do not suffer the wrath of God in ch 17, the boils, the pain (vs 10), or the 100 lb hail.
By the way, I am a post-tribulationist.
You're forgiven today, but see if you can fix that by tomorrow. :>)