Matthew 24:3 N-GFS
BIB: παρουσίας καὶ συντελείας τοῦ αἰῶνος
NAS: of Your coming, and of the end of the age?
KJV: coming, and of the end of the world?
INT: coming and the completion of the age

Matthew 28:20 N-GFS
BIB: ἕως τῆς συντελείας τοῦ αἰῶνος
NAS: even to the end of the age.
KJV: [even] unto the end of the world.
INT: until the completion of the age