Epiorkeo is used of breaking an oath in the instruction not to do so.

The attested use concerns violating an oath: in Matthew 5:33, the future active indicative form occurs in an instruction prohibiting that action and pairing it with paying one's oaths to the Lord.

1. Violating an oath · dominant

   In Matthew 5:33, ἐπιορκήσεις is a second-person future active indicative in the prohibition addressed to the hearer. The APB renders the clause, “You shall not break an oath,” and follows it with the instruction to pay oaths to the Lord.

   Matthew 5:33

In the Anselm Project Bible: In Matthew 5:33, the APB presents the clause as “You shall not break an oath.” This rendering confirms the clause's overall instruction rather than isolating each Greek word.