In the name of God, Most Gracious, Most Merciful
[74:1] O you hidden secret.*
*74:1 God's infinite wisdom willed to reveal the Quran through Muhammad, while the Quran's awesome 19-based mathematical miracle was revealed through God's Messenger of the Covenant 1406 lunar years after revelation of the Quran (1406=19x74 & 1974 AD was the Solar Year of discovery). In retrospect, we realize that the whole sura refers to the Quran's 19-based miracle (Appendices 1 & 2).
[74:4] Purify your garment.*
*74:4 Quran is the garment containing the secret code. This refers to removing 9:128-9.
[74:30] Over it is nineteen.*
*74:30-35 This "One of the great miracles" provides the first physical evidence that the Quran is God's message to the world. This 19-based miracle is detailed in Appendix 1.
[74:31] We appointed angels to be guardians of Hell, and we assigned their number (19) (1) to disturb the disbelievers, (2) to convince the Christians and Jews (that this is a divine scripture), (3) to strengthen the faith of the faithful, (4) to remove all traces of doubt from the hearts of Christians, Jews, as well as the believers, and (5) to expose those who harbor doubt in their hearts, and the disbelievers; they will say, "What did GOD mean by this allegory?" GOD thus sends astray whomever He wills, and guides whomever He wills. None knows the soldiers of your Lord except He. This is a reminder for the people.