On what day was John in the Spirit?

Answer

"I was in the Spirit on the Lord's day." Rev. 1: 10.

What prophecy was fulfilled in the Pentecostal outpouring of the Spirit in the time of the apostles?
What is said of those who love God's law?
What shows that God imputed sin to Cain?
What is necessary where there is a covenant?
Who did He say would be saved?
Under what striking symbol was all this foretold?
Who has everlasting life?

Questions & Answers are from the book Bible Readings for the Home Circle