Treasury of Scripture Knowledge

Summary

Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.

General references

Bible References

Because

Luke 3:8
Therefore produce fruit that is worthy of [and consistent with your] repentance [that is, live changed lives, turn from sin and seek God and His righteousness]. And do not even begin to say to yourselves [as a defense], ‘We have Abraham for our father [and so our heritage assures us of salvation]’; for I say to you that from these stones God is able to raise up children (descendants) for Abraham [for God can replace the unrepentant, regardless of their heritage, with those who are obedient].
Luke 16:24
And he cried out, ‘Father Abraham, have mercy on me, and send Lazarus so that he may dip the tip of his finger in water and cool my tongue, because I am in severe agony in this flame.’
John 8:37
I know that you are Abraham’s descendants; yet you plan to kill Me, because My word has no place [to grow] in you [and it makes no change in your heart].
Philippians 3:3
for we [who are born-again have been reborn from above—spiritually transformed, renewed, set apart for His purpose and] are the true circumcision, who worship in the Spirit of God and glory and take pride and exult in Christ Jesus and place no confidence [in what we have or who we are] in the flesh—

In isaac

Genesis 21:12
God said to Abraham, “Do not let it distress you because of Ishmael and your maid; whatever Sarah tells you, listen to her and do what she asks, for your descendants will be named through Isaac.
Hebrews 11:18
to whom it was said, “Through Isaac your descendants shall be called.”

General references

Genesis 21:3
Abraham named his son Isaac (laughter), the son to whom Sarah gave birth.
Genesis 25:5
Now Abraham gave everything that he had to Isaac;