What determines whether one is a child of Abraham?

Answer

"Know you therefore that they which are of faith, the same are the children of Abraham." Gal. 3: 7.
NOTE - Because of unbelief many of the Israelites fell in the wilderness, and were not permitted
to enter the promised land. Num. 14:27-33; Deut. 1:34-36.

Upon what ground does God's work for sinners rest?
Is there salvation through any other?
For what is all Scripture profitable?
What effect did the preaching of the Apostle Paul have upon the Gentiles?
Where will Christ then take His people?
What events mark the sounding of the seventh trumpet?
Why was this to be?

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