Deuteronomy 16:16 requires that every man appear before God three specific times a year. The TRIUNE God mandates three meetings. Each of these events can be connected to a particular Person of the Trinity , potentially pointing to the rapture date.
1. Passover : The Lamb , the Son2. Feast of Weeks ; Pentecost : The Holy Spirit3. Tabernacles , the 8th day ; The Son presents his bride to the Father
For more details on Simchat Atzeret , the 8th day of Tabernacles see link....