Chronicles I 28:7

7 And I will establish his kingdom for ever, if he continue to keep my commandments, and my judgments, as this day.

Chronicles I 28:7 Meaning and Commentary

1 Chronicles 28:7

Moreover, I will establish his kingdom for ever
The same is said in ( 2 Samuel 7:13 )

if he be constant to do my commandments, and my judgments, as at this
day;
if he continued in the observance of them, as he had begun, and went on in until that day; this is added here, and was not spoken by Nathan, when what goes before was; for Solomon was not then born, but must be suggested to David since, and as it should seem at this time.

Chronicles I 28:7 In-Context

5 And of all my sons, (for the Lord has given me many sons,) he has chosen Solomon my son, to set him on the throne of the kingdom of the Lord over Israel.
6 And God said to me, Solomon thy son shall build my house and my court: for I have chosen him to be my son, and I will be to him a father.
7 And I will establish his kingdom for ever, if he continue to keep my commandments, and my judgments, as this day.
8 And now before the whole assembly of the Lord, and in the audience of our God, keep and seek all the commandments of the Lord our God, that ye may inherit the good land, and leave it for your sons to inherit after you for ever.
9 And now, son Solomon, know the God of thy fathers, and serve him with a perfect heart and willing soul: for the Lord searches all hearts, and knows every thought: if thou seek him, he will be found of thee; but if thou shouldest forsake him, he will forsake thee for ever.

The Brenton translation of the Septuagint is in the public domain.