'Inner' in the Bible

And Peter said to them, “Repent [change your old way of thinking, turn from your sinful ways, accept and follow Jesus as the Messiah] and be baptized, each of you, in the name of Jesus Christ because of the forgiveness of your sins; and you will receive the gift of the Holy Spirit.

Who, having received such a charge, thrust them into the inner prison, and made their feet fast in the stocks.

shouting, "Men of Israel, help! This is the man who teaches everyone everywhere against our people, our law, and this sanctuary! Furthermore he has brought Greeks into the inner courts of the temple and made this holy place ritually unclean!"

(For they had seen Trophimus the Ephesian in the city with him previously, and they assumed Paul had brought him into the inner temple courts.)