Free Will vs Predestination vs Simple Act of Obedience

Have you ever been in the great debate of predestination versus free will? Then consider this Spurgeon devotional.

To highlight a quote:

Human knowledge has boundaries beyond which it cannot pass. Universal knowledge is for God alone. If this is true in the things that are seen and temporal, I can be certain that it is even more so in spiritual and eternal matters. Why, then, have I been torturing my brain with speculations about divine sovereignty and human responsibility?

And another quote:

The simplest act of obedience to Him is better than the profoundest knowledge.