1 Corinthians 2:10 (NIV)
10 but God has revealed it to us by his Spirit. The Spirit searches all things, even the deep things of God.
By ourselves we have no ability to understand God's thoughts. How could finite, sinful, broken human beings like us possibly comprehend what's goes on in the infinite, holy, perfect mind of God? Yet the amazing thing is that God has made it possible for us to understand Him -- not all of Him, of course, but an important part of Him. How? It's not because we are anything, but because just as Jesus promised, to those of us who trust Jesus Christ as our Saviour, God sends His Holy Spirit to live in us and to reveal God's thoughts to us. When we spend time with the Holy Spirit, it's like sitting down for coffee with a close personal aid to the U.S. President, and that aid tells you all the inside scoop on the President that others couldn't know.
Just like Jesus said about the Holy Spirit: 13 But when he, the Spirit of truth, comes, he will guide you into all truth. He will not speak on his own; he will speak only what he hears, and he will tell you what is yet to come. (John 16:13)
And indeed, that's the experience that Paul is talking about in 1 Corinthians 2:10-16. By God's grace at work in us by the Holy Spirit, we can understand truths about God that we could never grasp or understand on our own power.
That's why if you want to know God more, you need His Holy Spirit. Every day, ask the Holy Spirit to reveal more of God's thoughts, God's heart and God's mind to you. When you read your Bible, depend on the Holy Spirit to show you more of who God is -- "Open my eyes that I may see wonderful things in your law." (Psalm 119:18)
Thank You, Father, for sending Your Holy Spirit to be with us, to live in us, and to reveal more of Yourself to us. Open my eyes that I would know You better and love You more each day.