What gave special force to the oath of an angel?

Answer

"And the angel which 1 saw stand upon the sea and upon the earth lifted up his hand to heaven, and sware
by Him that liveth for ever and ever, who created heaven, and the things that therein are, and the earth, and
the things that therein are, and the sea, and the things which are therein, that there should be time no
longer." Rev. 10: 5, 6.
 


Of what kind of doctrines should we beware?
What will occur when the Lord descends from heaven?
How does the Lord, through the prophet Isaiah, indicate what is true Sabbath-keeping?
What do papal authorities say of the observance of Sunday by Protestants?
On what day does John say he was in the Spirit?
In what work are angels engaged?
What classes are we especially enjoined to help?

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