Great is our Lord, and mighty in power; His understanding is infinite. Psalm 147:5
Greek
Calculus
Quantum mechanics
Programming languages
The blue line rule in hockey
How interest rates on credit cards are figured
Repeating the same mistakes
Why the innocent suffer
My own heart
Grace
Some things are difficult or even impossible to understand.
Each of those things reminds me of my limitations.
However, God, our God, is limitless.
His understanding is infinite.