More correctly, they also may, etc. Also, as well as myself.
Obtain the salvation (σωτηρίας τύχωσιν)
The phrase N.T.o. Paul has περιποίησις σωτηρίας obtaining of salvation, 1Th 5:9.
Which is in Christ Jesus
The phrase salvation which is in Christ Jesus, N.T.o. For other collocations with in Christ Jesus in Pastorals, see 1Ti 1:14; 1Ti 3:13; 2Ti 1:1, 2Ti 1:9, 2Ti 1:13; 2Ti 2:3, 2Ti 2:15.
With eternal glory (μετὰ δόξης αἰωνίου)
The phrase eternal glory only here and 1Pe 5:10. Paul has αἰώνιον βάρος δόξης eternal weight of glory, 2Co 4:17. Glory here is the eternal reward of Christians in heaven.