20 David also said to Solomon his son, “Be strong and courageous, and do the work. Do not be afraid or discouraged, for the LORD God, my God, is with you. He will not fail you or forsake you until all the work for the service of the temple of the LORD is finished.

Read 1 Chronicles 28:20 Using Other Translations

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.
Then David said to Solomon his son, "Be strong and courageous and do it. Do not be afraid and do not be dismayed, for the LORD God, even my God, is with you. He will not leave you or forsake you, until all the work for the service of the house of the LORD is finished.
Then David continued, “Be strong and courageous, and do the work. Don’t be afraid or discouraged, for the LORD God, my God, is with you. He will not fail you or forsake you. He will see to it that all the work related to the Temple of the LORD is finished correctly.