Adam Clarke on Psalms 19:10

More to be desired are they than gold - This is strictly true; but who believes it? By most men gold is preferred both to God and his judgments; and they will barter every heavenly portion for gold and silver!

Sweeter also than honey - To those whose mental taste is rectified, who have a spiritual discernment.

Honey-comb - Honey is sweet; but honey just out of the comb has a sweetness, richness and flavour, far beyond what it has after it becomes exposed to the air. Only those who have eaten of honey from the comb can feel the force of the psalmist's comparison: it is better than gold, yea, than fine gold in the greatest quantity; it is sweeter than honey, yea, than honey from the comb.