What does God want from me? Me. God doesn't need my stuff. He doesn't need my offerings. He doesn't need my time or good deeds. God doesn't need my words of acclamation.
I do not need to take a bull from your barn
or goats from your pens,
because every animal in the forest is mine,
the cattle on a thousand mountains.
I know every bird in the mountains,
and everything that moves in the field is with me.
If I were hungry, I would not tell you,
because the world is mine, and all that fills it.
God doesn't need my stuff or my best effort. So he doesn't desire that. But he does desire me, my attention, and for me to be close to him because he knows that is the only way I will truly be satisfied. The next couple of verses in Psalm 50 go like this.
Sacrifice a thank offering to God,
and fulfill your vows to the Most High.
Call on me in the day of distress.
I will deliver you, and you will honor me.
God loves to deliver me. Oh how I love that he does when I am brought down to the realization that I need a deliverer. That's he why he wants me to call on him. I trust you, Father. Deliver me. Let my life honor you.