1 Chronicles 28:20

28:20 David said to Solomon his son, Be strong and of good courage, and do it: don't be afraid, nor be dismayed; for Yahweh God, even my God, is with you; he will not fail you, nor forsake you, until all the work for the service of the house of Yahweh is finished.
-World English Bible

Other Translation

28:20 And David said to Solomon his son, Be strong and of good courage, and do [it]: fear not, nor be dismayed: for the LORD God, [even] my God, [will be] with thee; he will not fail thee, nor forsake thee, until thou hast finished all the work for the service of the house of the LORD.
-King James Version