Psalm 89:30-35

If his children give up my law, and are not ruled by my decisions;

Psalm 115:14

May the Lord give you and your children still greater increase.

Isaiah 9:7

Of the increase of his rule and of peace there will be no end, on the seat of David, and in his kingdom; to make it strong, supporting it with wise decision and righteousness, now and for ever. By the fixed purpose of the Lord of armies this will be done.

Isaiah 59:21

And as for me, this is my agreement with them, says the Lord: my spirit which is on you, and my words which I have put in your mouth, will not go away from your mouth, or from the mouth of your seed, or from the mouth of your seed's seed, says the Lord, from now and for ever.

Luke 1:32-33

He will be great, and will be named the Son of the Most High: and the Lord God will give him the kingdom of David, his father:

Acts 2:30

But being a prophet, and having in mind the oath which God had given to him, that of the fruit of his body one would take his place as a king,

Treasury of Scripture Knowledge

Summary

If thy children will keep my covenant and my testimony that I shall teach them, their children shall also sit upon thy throne for evermore.

If thy children

General references

Bible References

If thy children

Psalm 89:30
If his children give up my law, and are not ruled by my decisions;

Their children

Psalm 115:14
May the Lord give you and your children still greater increase.
Isaiah 9:7
Of the increase of his rule and of peace there will be no end, on the seat of David, and in his kingdom; to make it strong, supporting it with wise decision and righteousness, now and for ever. By the fixed purpose of the Lord of armies this will be done.
Isaiah 59:21
And as for me, this is my agreement with them, says the Lord: my spirit which is on you, and my words which I have put in your mouth, will not go away from your mouth, or from the mouth of your seed, or from the mouth of your seed's seed, says the Lord, from now and for ever.
Luke 1:32
He will be great, and will be named the Son of the Most High: and the Lord God will give him the kingdom of David, his father:

General references

Psalm 89:4
I will make your seed go on for ever, your kingdom will be strong through all generations. (Selah.)

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain