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

Moreover

Psalm 89:28-37 I will keep my mercy for him for ever: and my covenant faithful to him. . . .

Psalm 132:12 If thy children will keep my covenant, and these my testimonies which I shall teach them: Their children also for evermore shall sit upon thy throne.

Daniel 2:44 But in the days of those kingdoms, the God of heaven will set up a kingdom that shall never be destroyed, and his kingdom shall not be delivered up to another people: and it shall break in pieces, and shall consume all these kingdoms: and itself shall stand for ever.

if

1 Chronicles 22:13 For then thou shalt be able to prosper, if thou keep the commandments, and judgments, which the Lord commanded Moses to teach Israel: take courage and act manfully, fear not, nor be dismayed.

1 Kings 6:12,13 As for this house, which thou art building, if thou wilt walk in my statutes, and execute my judgments, and keep all my commandments, walking in them, I will fulfil my word to thee, which I spoke to David thy father. . . .

1 Kings 9:4,5 And if thou wilt walk before me, as thy father walked, in simplicity of heart, and in uprightness: and wilt do all that I have commanded thee, and wilt keep my ordinances, and my judgments, . . .

1 Kings 11:9-13 And the Lord was angry with Solomon, because his mind was turned away from the Lord, the God of Israel, who had appeared to him twice; . . .

constant [heb] strong

1 Chronicles 28:10 Now therefore seeing the Lord hath chosen thee to build the house of the sanctuary, take courage, and do it.

Joshua 1:6,7 Take courage, and be strong: for thou shalt divide by lot to this people the land for which I swore to their fathers, that I would deliver it to them. . . .

1 Kings 2:2-4 I am going the way of all flesh: take thou courage and shew thyself a man. . . .

as at this day

1 Kings 8:61 Let our hearts also be perfect with the Lord our God, that we may walk in his statutes, and keep his commandments, as at this day.

1 Kings 11:4 And when he was now old, his heart was turned away by women to follow strange gods: and his heart was not perfect with the Lord his God, as was the heart of David, his father.