On what day was John in the Spirit?

Answer

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

16. How did Christ reprove those who, though familiar with the letter of the Scriptures, failed to understand them?
How necessary is faith?
Concerning what subject ought we to be informed?
In what literal language is this persecution of the people of God further described?
When Paul wished to preach the true God to the idolatrous Athenians, how did he describe Him?
Why did God give His only begotten Son to the world?
What has He promised to be to those in trouble?

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