Only here in the New Testament. Compare I long for you, Phi 1:8; and for kindred words see 2Co 7:7; Rom 15:23.
Joy and crown (χαρὰ καὶ στέφανος)
Nearly the same phrase occurs 1Th 2:19. The Philippian converts are his chaplet of victory, showing that he has not run in vain, Phi 2:16. For crown, see on Rev 4:4; see on 1Pe 5:4.
So stand fast
As I have exhorted, and have borne myself in the conflict which you saw and heard to be in me, Phi 1:30.