In Islam, God is One, eternal, all-knowing and all-powerful. He was not born and has not given birth, and nothing is like Him. He is also the Most Merciful: all but one of the 114 chapters of the Quran begin with the words 'In the name of God, the Most Gracious, the Most Merciful'.
Muslims know God through His beautiful names, such as the Most Merciful, the Forgiving, the Just, the Wise and the Loving. The Quran says He is closer to a person than the vein in their neck, and that He answers the one who calls on Him. Muslims pray to Him directly, with no priest between a person and God.