And I saw another angel ascending from the east, having the seal of the living God: and he cried with a loud voice to the four angels, to whom it was given to hurt the earth and the sea,
All Commentaries on Revelation 7:2 Go To Revelation 7
George Leo Haydock
AD 1849
Having the seal. This sign is generally supposed to be the sign of the cross. In the East, it was the custom to impress some indelible mark upon the soldiers. This sign amongst the ancient Christians was used on every occasion. (Calmet)