On what day was John in the Spirit?

Answer

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

Who was the Rock that went with them?
In whom is the gift?
What did Jesus say the Spirit of truth would do?
Had the Lord spoken regarding the Sabbath previous to this time?
BY whom was the Ten Commandment law proclaimed?
What was Paul's manner respecting the Sabbath?
How will the ransomed of the Lord return to Zion?

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