The coming of the Bridegroom to the marriage is represented in Daniel 7:13, 14, where Christ comes to the Father to receive his kingdom. In ancient times the coming of a king to his capital city to receive his throne and kingdom was called a marriage. This event—the receiving of the capital city as the bride—was celebrated with the pomp and show of a real marriage. So when Christ receives from the Father in heaven his kingdom, he is said to be married to his bride—the New Jerusalem (Revelation 21:9); and this is called in the parable “the marriage.” GSAM 214.3
After the close of the twenty-three hundred days, Oct. 22, 1844, the Advent people, who compared events in their experience with the facts connected with an Eastern marriage, said, “Christ has gone in to the marriage.” As they received clearer light on the nature of the event to take place at the end of the twenty-three hundred days, their faith followed Christ in the work upon which he had entered; so by faith, they “went in with him to the marriage.” GSAM 214.4