When the ancestors of mankind, Adam and Eve, were corrupted by Satan, God began His management of mankind's salvation. Since that time, He has worked without cease: God decreed the laws to guide mankind, and He personally came among man to be crucified and redeem mankind, and during the last days, God continues His work, fulfilling the prophecies of the Bible: "I go to prepare a place for you" (John 14:2). "I come quickly; and my reward is with me, to give every man according as his work shall be" (Revelation 22:12).