Differing viewpoints exist about the exact timing of the rapture and whether Christ's return will occur in one event or two. Pretribulationism distinguishes the rapture from the second coming of Jesus Christ mentioned in the Gospel of Matthew, 2 Thessalonians, and Revelation. This view holds that the rapture will precede the seven-year Tribulation, which will culminate in Christ's second coming and be followed by a thousand-year Messianic Kingdom. This theory grew out of the translations of the Bible that John Nelson Darby analyzed in 1833. Pretribulationism is the most widely held view among Christians believing in the rapture today, although this view is disputed within evangelicalism. Some assert a post-tribulational rapture.