If I wanted or desired any thing, as I do not, being the all-sufficient God, I would not tell thee, that thou mightest supply my wants. The fulness thereof, i.e. all those creatures wherewith it is replenished.
Related Commentaries of Psalms 50:12
Psalms 50:12
12 If I were hungry, I would not tell thee: for the world is mine, and the fulness thereof.