God renews your mind to understand spiritual things. "By faith we understand"(Hebrews 11:3). The spiritual man, unlike the natural man, can understand the things of God. "But the natural man does not receive the things of the Spirit of God" (1 Corinthians 2:14). By the grace of God, through faith in Jesus Christ, your mind is renewed.
The Holy Spirit transforms you, by renewing your mind. Then, you are no longer conformed to this world. Only God's Spirit is able to transform our minds in Christ. "And do not be conformed to this world, but be transformed by the renewing of your mind"(Romans 12:2).
The Holy Spirit renews your mind through new creation in Jesus Christ our Lord (2 Corinthians 5:17). You are enabled to understand the will of God in Christ. Your renewed mind understands the will of God in the Bible. The transformed mind refuses to be conformed to the world of unbelief. "Let this mind be in you which was also in Christ Jesus"(Philippians 2:5).
The Holy Spirit renews your mind to grow in grace and knowledge. You are able to read the Bible with understanding. The Bible is now more than old stories of people who lived long ago. It's like a new book to you, because your mind is renewed. The Holy Spirit, who inspired the authors of the Bible, now continues to renew your mind through the word of truth in the Bible.