Islam set Ibrahim to founder of“pure monotheism”, and was opened by the prophet Muhammad of the last following the prophets Musa（Moses）and Isa（Jesus）dispatched by God Allah. A Muslim（Islam believer）respects Musa（Moses）and Isa（Jesus）as an apostle of God, and believes as a sacred book to which the Old Testament and the New Testament as well as Quran（Koran）were revealed from Allah. There was no claim that Islam was“a new religion”from the beginning. Therefore, Quran（Koran）is relevant in contents with two previous sacred books, and has similarity and difference. In order for three religions to exist simultaneously in the world, it does not argue about a doctrine, but difference is recognized mutually rather, and it is requested that a dialog should be deepened from the viewpoint of a mutual understanding．
