Most of us want spiritual understanding, but we aren't willing to pursue it any further than listening to a few sermons or rushing through ten minutes of Bible reading. Often our failure to understand God's Word is due to our unwillingness to invest time & energy in persistent, serious Bible study. If you really want to understand scripture, consider following a focused & systematic plan of study. Make a commitment to apply to your daily life whatever truth you learn. When God sees that we are serious about pursuing truth & wisdom He opens our minds to understand some of the magnificent mysteries of the Spiritual life.
Proverbs 2:2b-7 ..."concentrate on understanding. Cry out for insight and understanding. Search for them as you would for lost money or hidden treasure. Then you will understand what it is to fear the Lord, and you will gain knowledge of God. For the Lord grants wisdom. He grants a treasure of good sense to the godly, He is their shield, protecting those who walk with integrity."