katecheo describes giving instruction, whether teaching a person, reporting what people have been taught, or speaking to instruct others.

The attested use concerns giving or receiving instruction: people are taught about the Lord, the law, the word, or reported claims, and a speaker aims to instruct others in the assembly. The same usage includes instruction whose result is knowing the certainty of matters previously taught.

1. Giving or receiving instruction · dominant

   Passive forms describe persons as having received teaching: in Acts 18:25 the APB renders that a man “had been instructed in the way of the Lord,” while Luke 1:4 connects prior instruction with knowing the certainty of the matters addressed. In Acts 21:21 and Acts 21:24, people have been instructed about allegations concerning another person; Romans 2:18 places being instructed alongside the law. The active form in 1 Corinthians 14:19 expresses the speaker’s purpose “so that I may instruct others also,” and Galatians 6:6 presents one taught the word alongside one who teaches.

   1 Corinthians 14:19Acts 18:25Acts 21:21Galatians 6:6Luke 1:4Romans 2:18

In the Anselm Project Bible: The APB commonly presents the term with “instructed,” “taught,” or “teaches,” and in 1 Corinthians 14:19 with “instruct others.” These renderings reflect the surrounding clauses, but the translation does not mark a one-to-one English equivalent for each form.