G2171–εὐχή–euchē

And Paul, after waiting some days, went away from the brothers and went by ship to Syria, Priscilla and Aquila being with him; and he had had his hair cut off in Cenchrea, for he had taken an oath.

εὐχήν. euchēn “a vow.”

Do this, then, which we say to you: We have four men who have taken an oath;

εὐχὴν euchēn “a vow”

And by the prayer of faith the man who is ill will be made well, and he will be lifted up by the Lord, and for any sin which he has done he will have forgiveness.

εὐχὴ euchē “prayer”