It’s funny that Calvinists are often accused (and many times rightly so) of looking outside of Scripture and what God has revealed to find our theology. A pretty common objection is that it is nothing more than a man-made system. That’s probably true with every “ism”. Nonetheless I found this from Calvin himself quite enlightening:
Consequently, we know the most perfect way of seeking God, and the most suitable order, is not for us to attempt with bold curiosity to penetrate to the investigation of his essence, which we ought more to adore than meticulously to search out, but for us to contemplate him in his works whereby he renders himself near and familiar to us, and in some manner communicates himself. (Calvin, Institutes, 1.5.10)
In other words the way to seeking God is not by dissecting Him like you would a frog but adoring Him like you would a sunset.