لَا إِلَٰهَ إِلَّا هُوَ يُحْيِي وَيُمِيتُ ۖ رَبُّكُمْ وَرَبُّ آبَائِكُمُ الْأَوَّلِينَ (8)
(44:8) There is no god but He: *7 He gives life and causes death. *8 He is your Lord and the Lord of your forefathers of yore. *9
*7) The real God Who alone has the right that He should be worshipped and served.
*8) That is, "There is no god other than Allah, nor can there be. Therefore, it is against reason that you should disdain the worship of Him Who breathed life into dead matter and made you a living man, and Who possesses full powers to keep you alive as long as He likes and bring your life to an end whenever He likes, or you serve any other than Him, or start worshipping others besides Hint."
*9) There is a subtle allusion in it to this: "He was also Lord of those of your ancestors who took other gods besides Allah; they had not done the right thing by giving up their real Lord and serving others that you should be justified in imitating them and regard their conduct as an argument for the soundness of your creed. They ought to have served only Him, because He alone was their Lord.