10. Therefore—Because of the anxiety I feel that the Gospel should be extended; that anxiety being implied in 2Ti 2:9.
endure—not merely "I passively suffer," but "I actively and perseveringly endure," and "am ready to endure patiently all things."
the elect's sakes—for the sake of the Church: all the members of Christ's spiritual body (Col 1:24).
they … also—as well as myself: both God's elect not yet converted and those already so.
salvation … glory—not only salvation from wrath, but glory in reigning with Him eternally (2Ti 2:12). Glory is the full expansion of salvation (Ac 2:47; Ro 8:21-24, 30; Heb 9:28). So grace and glory (Ps 84:12).