The first Bible I owned had a list of memory verses in the back, and one of the very first I memorized was Jeremiah 33:3, which I immediately became a personal favorite. In the NIV version, this verse says "Call to me and I will answer you and tell you great and unsearchable things you do not know."
What I love about this verse are the multiple promises that it contains. First, if we call on the Lord, He will answer. That alone would satisfy my parched and lonely soul. But the verse does not end there. No, he will tell us things we do not know. He will bring clarity, He promises revelation. And not just ordinary things. No, he will tell us great and unsearchable things.
Early in my walk, it stunned me to realize the vastness of the God I was in new relationship with, and this verse crystallized that notion. Years later, I am still stunned.