THE KING MESSIAH [HAZRAT MAHDI (PBUH)] WILL CALL PEOPLE TO THE PATH OF ALLAH

... and he will therefore (be able to) teach the people the ways of God. (Maimonides, Mishnah Torah, Repentance 9:2)

He shall teach... people and instruct them in the way of God. He will... repair the breaches... (Maimonides, Mishnah Torah, Laws of Kings 11:4)

... He (the Mahdi (as)) will then perfect the entire world, to serve God together... (Maimonides, Mishnah Torah, Laws of Kings 11:4)