New Revised Standard Version
now therefore may it please you to bless the house of your servant, so that it may continue forever before you; for you, O Lord GOD, have spoken, and with your blessing shall the house of your servant be blessed forever.”

Contemporary English Version
Please bless my descendants and let them always be your chosen kings. You have already promised, and I'm sure that you will bless my family forever.

New American Bible
do, then, bless the house of your servant, that it may be in your presence forever—since you, Lord GOD, have promised, and by your blessing the house of your servant shall be blessed forever.”

Douay-Rheims Bible
And now begin, and bless the house of thy servant, that it may endure for ever before thee: because thou, O Lord God, hast spoken it, and with thy blessing let the house of thy servant be blessed for ever.

And now begin, and bless the house of thy servant, that it may endure for ever before thee: because thou, O Lord God, hast spoken it, and with thy blessing let the house of thy servant be blessed for ever.

Numbers 6:24-26 The Lord bless thee, and keep thee. . . .

1 Chronicles 17:27 And thou hast begun to bless the house of thy servant, that it may be always before thee: for seeing thou blessest it, O Lord, it shall be blessed for ever.

Psalm 115:12-15 The Lord hath been mindful of us, and hath blessed us. He hath blessed the house of Israel: he hath blessed the house of Aaron. . . .

for ever

2 Samuel 22:51 Giving great salvation to his king, and shewing mercy to David his anointed, and to his seed for ever.