Following are a number of back-translations as well as a sample translation for translators of 1 Chronicles 28:20:

• Kupsabiny: “Be strong and courageous so you can do this work. Do not be afraid, and do not lose hope. Our God is with you. He will not abandon you, but you two shall stay together until all the work that is needed to be done in the Home of God is finished.” (Source: Kupsabiny Back Translation)
• Newari: “Again, David said to Solomon his son, "Being strong and courageous, do this work! Do not be afraid, do not let your heart be discouraged, the LORD God, our God will be with you. He will be helping you in the service of the LORD’s temple until you have adequately done all the needed work. He will not abandon you.” (Source: Newari Back Translation)
• Hiligaynon: “David also said to his son Solomon, ‘[You (sing.)] be strong and courageous. Start the work now. [You (sing.)] do- not -be- afraid or discouraged/(lit. weaken), for the LORD God, my God, is-with you (sing.). He will- not -forsake nor leave you (sing.) until all the works for the temple of the LORD is-finished.” (Source: Hiligaynon Back Translation)
• English: “David also said to his son Solomon, ‘Be strong and courageous, and do this work. Do not be afraid or discouraged, because Yahweh our God will be with/helping you. He will not fail to help you or abandon you until you finish all the work of making his temple.” (Source: Translation for Translators)