To whom was this covenant-promise later renewed?

Answer

"And God said unto Abraham, . . . Sarah thy wife shall bear thee a son indeed; and thou shall call his name
Isaac:- and I will establish My covenant with him for an everlasting covenant, and with his seed after him."
"I will make thy seed to multiply as the stars of heaven. . . . and in thy seed shall all the nations of the earth
be blessed." Gen. 17: 15-19; 26: 4.

What does Christ thus become to the believer?
On what basis is there no possibility of justification for the sinner?
For what purpose did Christ come into the world?
What is the love of God declared to be?
What may be said of the developments in the line of scientific inventions since 1798?
When afflicted, for what did he pray?
What did John the Baptist say to the Pharisees and Sadducees who came to his baptism?

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