And David said to his son Solomon, "Be strong and of good courage, and do it; do not fear nor be dismayed, for the LORD God--my God--will be with you. He will not leave you nor forsake you, until you have finished all the work for the service of the house of the LORD.
1 Chronicles 28:20
Surrounding context
28:19 "All this," said David, "the LORD made me understand in writing, by His hand upon me, all the works of these plans."
28:20 And David said to his son Solomon, "Be strong and of good courage, and do it; do not fear nor be dismayed, for the LORD God--my God--will be with you. He will not leave you nor forsake you, until you have finished all the work for the service of the house of the LORD.
28:21 Here are the divisions of the priests and the Levites for all the service of the house of God; and every willing craftsman will be with you for all manner of workmanship, for every kind of service; also the leaders and all the people will be completely at your command."