"Blessed are the pure in heart, for they shall see God" (Matt. 5:8).
You have a part to play in becoming pure in heart.
Purifying a heart is the gracious and miraculous work of the Holy Spirit, but there are some things we must do in response to His prompting. First, we must admit we can't purify our own hearts. Proverbs 20:9 says, "Who can say, 'I have cleansed my heart, I am pure from my sin?'" The implied answer: no one!
Next, we must put our faith in Jesus Christ, whose sacrifice on the cross is the basis for our cleansing. Acts 15:9 says that God cleanses hearts on the basis of faith. Of course our faith must be placed in the right object. First John 1:7 says, "If we walk in the light as He Himself is in the light, we have fellowship with one another, and the blood of Jesus His Son cleanses us from all sin."
Finally, we must study the Bible and pray. The psalmist said we keep our way pure by keeping it according to God's Word, which we must treasure in our hearts (Ps. 119:9, 11). As we pray and submit to the Word, the Spirit purifies our lives.
That's how you acquire and maintain a pure heart. As a result you "shall see God" (Matt. 5:8). That doesn't mean you'll see Him with physical eyes, but with spiritual ones. You begin to live in His presence and become increasingly aware of His working in your life. You recognize His power and handiwork in the beauty and intricacy of creation (Ps. 19). You discern His grace and purposes amid trials and learn to praise Him in all things. You sense His ministry through other Christians and see His sovereignty in every event of your life. Life takes on a profound and eternal meaning as you share Christ with unbelievers and see Him transform lives.
There's no greater joy than knowing you are pure before God and that your life is honoring to Him. May that joy be yours today and may God use you in a powerful way for His glory!