Parallel
2 Timothy 2:5
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ἐὰν δὲ καὶ ἀθλῇ τις, οὐ στεφανοῦται ἐὰν μὴ νομίμως ἀθλήσῃ.
Likewise, a competitor does not receive the crown unless he competes according to the rules.