NET
20 David said to his son Solomon: “Be strong and brave! Do it! Don’t be afraid and don’t panic! For the Lord God, my God, is with you. He will not leave you or abandon you before all the work for the service of the Lord’s temple is finished.
Darby
20 And David said to Solomon his son, Be strong and courageous, and do it; fear not nor be dismayed: for Jehovah Elohim, my God, will be with thee; he will not leave thee, neither forsake thee, until all the work for the service of the house of Jehovah is finished.
KJV
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.