David, having convened the principal men of the nation, declared Solomon his successor, whom God had chosen both to be king, and to build the temple, 1Ch 28:1-7, and exhorted both them and him to serve the Lord, and build an house for him, 1Ch 28:8-10, then gave Solomon the pattern of it, and an account of the materials he had prepared for it, 1Ch 28:11-19, and encouraged him to go about the work with alacrity and intrepidity, 1Ch 28:20,21.
The Brenton translation of the Septuagint is in the public domain.