Charles Spurgeon Commentary 1 Chronicles 28:18-20

"and for the altar of incense refined gold by weight; and gold for the pattern of the chariot, [even] the cherubim, that spread out [their wings], and covered the ark of the covenant of Jehovah. All this, [said David], have I been made to understand in writing from the hand of Jehovah, even all the works of this pattern. And David said to Solomon his son, Be strong and of good courage, and do it: fear not, nor be dismayed; for Jehovah God, even my God, is with thee; he will not fail thee, nor forsake thee, until all the work for the service of the house of Jehovah be finished." — 1 Chronicles 28:18-20 (ASV)

And for the altar of incense refined gold by weight; and gold for the pattern of the chariot of the cherubims, that spread out their wings, and covered the ark of the covenant of the LORD. All this, said David, the LORD made me understand in writing by his hand upon me, even all the works of this pattern. And David said to Solomon his son, Be strong and of good courage, and do it: (1 Chronicles 28:18–20)

Do not talk about it; do not sit down, and dream over the plans, and think how admirable they are, and then roll them up; but, Be strong and of good courage, and do it.