Neither Muslims nor anyone else truly worships the true God if they reject Jesus as he really is in the Gospels.
John PiperTo love God does not mean to meet His needs, but rather to delight in Him and to be captivated by His glorious power and grace, and to value Him above all other things on earth. All the rest of the commandments are the kinds of things that we will do from our hearts, if our hearts are truly delighted with and resting in the glory of God's grace.
John PiperA Christian is not a person who believes in his head the teachings of the Bible. Satan believes in his head the teachings of the Bible! A Christian is a person who has died with Christ, whose stiff neck has been broken, whose brazen forehead has been shattered, whose stony heart has been crushed, whose pride has been slain, and whose life is now mastered by Jesus Christ.
John PiperGod is pursuing with omnipotent passion a worldwide purpose of gathering joyful worshipers for Himself from every tribe and tongue and people and nation. He has an inexhaustible enthusiasm for the supremacy of His name among the nations. Therefore, let us bring our affections into line with His, and, for the sake of His name, let us renounce the quest for worldly comforts and join His global purpose.
John Piper