‘And there will be no curse any more, and the throne of God and of the Lamb will be in it, and his servants will worship him, and they will see his face and his name will be on their foreheads.'
The curse that resulted from man's first failure (see Genesis 3) has been removed. All is now restored. Again, as constantly, we are reminded that the Lamb is on God's throne, even as glorified man, for He partakes of the essential essence and glory of God. His servants will worship Him (compare Revelation 7:15 where the same verb is used).
‘They shall see His face.' This was something which no man could do and live (Exodus 33:20). But now the people of God have been made perfect and there is nothing to prevent their seeing the glory of His face. They have been made like Him and they see Him as He is (see 1 John 3:2; compare Psalms 17:15). To see the king's face, which involved direct access into his presence, was on earth a privilege for the very view exceptionally important people (Esther 1:14 compare 2 Samuel 14:24; 2 Samuel 14:28; 2 Samuel 14:32), but here it is for all His people.
‘His name will be on their foreheads' - a sign that they are forever His (see Revelation 3:12). The High Priest bore the name of Yahweh on his forehead as ‘holiness unto Yahweh' (Exodus 39:30-31; compare Jeremiah 2:3)