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.

To whom does the \"seed\" in these promises refer?
What is said of Christ's childhood and early life?
What did God say to Abraham concerning his wife, Sarah?
What promise is made to the willing and obedient?
What did the dragon do when cast to the earth?
What was Satan's design in thus persecuting the church?
What false idea of this gathering were some to hold?

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