To borrow a phrase from Martin Luther, the Bible is "the manger in which the Word of God is laid." While Lutherans recognize differences in the way the Bible should be studied and interpreted, it is accepted as the primary and authoritative witness to the church's faith. Written and transcribed by many authors over a period of many centuries, the Bible bears remarkable testimony to the mighty acts of God in the lives of people and nations. In the Old Testament is found the vivid account of God's covenant relationship to Israel. In the New Testament is found the story of God's new covenant with all of creation in Jesus.