Moicheuo is used for adultery, both as a commanded prohibition and as conduct described in marriage-related situations.

The attested verses use the verb for adultery: most often in prohibitions listed among commandments, and also for conduct described in marital situations, inward desire, public inconsistency, and a warning addressed to those engaged in it.

1. Adultery prohibited or described as conduct · dominant

   In Matthew 5:27, Matthew 19:18, Mark 10:19, Luke 18:20, Romans 13:9, and James 2:11, the forms occur in commands alongside prohibitions of murder, theft, or perjury. In Luke 16:18 the present active form occurs in clauses about releasing a wife and marrying another, while Revelation 2:22 uses a present active participle for those described as committing adultery with her.

   Matthew 5:27Matthew 19:18Mark 10:19Luke 16:18Romans 13:9Revelation 2:22

In the Anselm Project Bible: Across the supplied verses, the APB regularly presents the clauses with “commit adultery” or “committed adultery,” including commands and descriptions of conduct. These English phrases confirm the clauses' overall presentation rather than establish a separate lexical distinction.