3 saying, “Don’t harm the earth, neither the sea, nor the trees, until we have sealed the bondservants of our God on their foreheads!”
do not harm – he tells the Angels not to pour out flaming fire yet that will be poured out on this Day; as described in 2 Thess 1:7-8.
sealed the bond-servants of our God – the last of the elect of the Sanctified Church, and the last Israel will be saved, they will be sealed by the Spirit (Eph 1:13-14). Of course, the bond-servants of God are not only blood-born Israelites. The Book of Revelation was written to all “the bond-servants our God” (Rev 1:1). In Christ, there is neither Jew nor Greek (Gal 3:28).