kalopoieo describes continuing to do what is good without becoming weary.

The attested use presents doing what is good as an ongoing practice that believers are told not to abandon through weariness.

1. Persisting in what is good · dominant

   In 2 Thessalonians 3:13, the present active nominative plural masculine participle occurs in the exhortation not to grow weary; the APB renders the clause, "do not grow weary of doing good."

   2 Thessalonians 3:13

In the Anselm Project Bible: In 2 Thessalonians 3:13, the APB presents the clause as "do not grow weary of doing good." This wording confirms the clause's overall exhortation rather than isolating a precise English equivalent.