Revelation 1:10-11 I was in the Spirit on the Lord’s day, and heard behind me a great voice, as of a trumpet, Saying, I am Alpha and Omega, the first and the last: and, What thou seest, write in a book, and send it unto the seven churches which are in Asia; unto Ephesus, and unto Smyrna, and unto Pergamos, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.

The Lord’s Day, the day of worship, the day set aside for the church’s witness to the resurrection of our Lord Jesus Christ. A time set aside to be dwelling in the presence of God. This marked the special day that the Apostle John had fellowship and sweet communion with his Lord. A most blessed time of worship and beholding the glory of Christ.

It was on the Lord’s Day, that is, the first day of the week. That was the day of Christ’s resurrection, of two subsequent appearances to His disciples, of the descent of the Spirit at Pentecost. The disciples gathered to break bread on the Lord’s Day, and Paul instructed the Corinthians to take a collection on the first day. Some think that John refers to the time of judgment about which he will be writing, but the expression is quite different in the original. [MacDonald]