Suffer hardship with me (sunkakopathēson). See note on 2Ti 1:8 for this verb. The old preacher challenges the young one to share hardship with him for Christ.
As a good soldier (hos kalos stratiōtēs). Paul does not hesitate to use this military metaphor (this word only here for a servant of Christ) with which he is so familiar. He had already used the metaphor in 1Co 9:7; 2Co 10:3.; 1Ti 1:18. In Phi 2:25 he called Epaphroditus “my fellow-soldier” (sunstratiōtēn mou) as he did Archippus in Phm 1:2.