Charles Ellicott Commentary 1 Chronicles 28:10

"Take heed now; for Jehovah hath chosen thee to build a house for the sanctuary: be strong, and do it." — 1 Chronicles 28:10 (ASV)

Take heed now; for the Lord. —Or, See now that Jehovah has chosen you; consider this high commission, weigh it well and realize it thoroughly, then be strong, and act. (See 1 Chronicles 22:13; 1 Chronicles 22:16.)

David now, in the presence of the Assembly, hands over to his son the plans of the Sanctuary and its vessels, remarking, as he does so, that the whole is of Divine origin (1 Chronicles 28:19).