Matthew 5:8
“Blessed are the pure in heart, for they shall see God.”
Purity of heart is a work in progress in which both God and man share responsibility. Many scriptures show that God will cleanse by pardoning sin. Notice how clearly James shows purifying is our responsibility: “Draw near to God and He will draw near to you. Cleanse your hands, you sinners; and purify your hearts, you double-minded” (James 4:8).
How is this purifying done? I Peter 1:22 makes a summary statement: “Since you have purified your souls in obeying the truth through the Spirit in sincere love of the brethren, love one another fervently with a pure heart.” Obedience to the truth through the Spirit purifies our character by inculcating right habits within it.
After commanding us to clean ourselves up, Isaiah adds, “Put away the evil of your doings from before My eyes. Cease to do evil, learn to do good; seek justice, rebuke the oppressor; defend the fatherless, plead for the widow” (Isaiah 1:16-17). Likewise, after admonishing us to guard our heart, our Father says:
Put away from you a deceitful mouth, and put perverse lips far from you. Let your eyes look straight ahead, and your eyelids look right before you. Ponder the path of your feet, and let all your ways be established. Do not turn to the right or the left; remove your foot from evil. (Proverbs 4:24-27)
To meet these qualifications requires “truth in the inward parts” (Psalm 51:6). A deceitful heart will never meet the standards because it does not operate from a foundation of godly integrity. David says in verse 5 that, humanly, he was shaped in iniquity. God, with our cooperation through faith, is ultimately the Creator of a pure heart in us, but it is a protracted process achieved by imparting a holy nature by His Spirit. This unites us with a holy Christ, with whom we fellowship, washing us in the blood of the Lamb so that with His aid we can mortify the flesh and live toward God, giving Him first priority in everything.