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.

After she became queen of Persia, how did Esther show her integrity to God?
What other reason is given for keeping the Sabbath?
What, through the prophet Isaiah, does the Lord call the Sabbath?
Of what does God say the keeping or hallowing of the Sabbath is a sign?
When the church had received help from the state to this extent, what more did she demand?
How does Isaiah speak of the wicked at this time?
Who witnessed the laying of the foundations of the earth?

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