On what day does John say he was in the Spirit?

Answer

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

By whom were the men directed who thus spoke for God?
From what is He able to keep us?
9. What prophetic period extends to the time of the cleansing of the sanctuary, or the investigative judgment?
What promise did Christ make concerning His coming?
What warning has Christ given that we might not be taken by surprise by this great event?
How many distinct classes will have a resurrection?
Whatever may come, what blessed assurance has everyone who loves God?

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