G2727–κατηχέω–katēcheō

that thou mightest know the certainty of those things in which thou hast been instructed.

κατηχήθης katēchēthēs “you were instructed”

He was instructed in the way of the Lord, and being fervent in his spirit, he spoke and taught exactly the things concerning Jesus, knowing only the baptism of John.

κατηχημένος katēchēmenos “instructed”

And they have been informed concerning thee, that thou teachest all the Jews among the nations apostasy from Moses, saying that they should not circumcise their children, nor walk in the customs.

κατηχήθησαν katēchēthēsan “They have been informed”

take these and be purified with them, and pay their expenses, that they may have their heads shaved; and all will know that [ergänzt: of those things] of which they have been informed about thee nothing is [ergänzt: true]; but that thou thyself also walkest orderly, keeping the law.

κατήχηνται katēchēntai “they have been informed”

and knowest the will, and discerningly approvest the things that are more excellent, being instructed out of the law;

κατηχούμενος katēchoumenos “being instructed”

but in [ergänzt: the] assembly I desire to speak five words with my understanding, that I may instruct others also, [ergänzt: rather] than ten thousand words in a tongue.

κατηχήσω, katēchēsō “I may instruct,”

Let him that is taught in the word communicate to him that teaches in all good things.

κατηχούμενος katēchoumenos “being taught”κατηχοῦντι katēchounti “teaching”