If Islam is the Creator’s Final Word to Humanity Then Book of the Revelation & All Biblical Prophecy Null & Void

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The followers of Muhammed say that his teachings are the last word from the Creator whom they call Allah, that the Old then New Testaments of the Bible are merely building blocks up to Islam, yet the Word of Elohim (the Bible) says that Jesus will conquer those opposing Him at Armageddon, then a thousand years of His reign, followed by the creation of a new heaven and a new earth, so do you believe Muhammed or Jesus Christ the savior of all who receive Him?