David said to Solomon his son, Be strong and of good courage, and do it: don't be afraid, nor be dismayed; for Yahweh God, even my God, is with you; he will not fail you, nor forsake you, until all the work for the service of the house of Yahweh is finished.
The absolute sincerity and total devotion of king David in his love of God and his enthusiasm for building the temple shine in every word of these wonderful sentences.  How tragic it is that his son Solomon failed so wretchedly to honor the admonition of this wonderful father.