[Matthew 5:8] Blessed are the pure in heart, For they shall see God

[Psalm 15:1-5] LORD, who may abide in Your tabernacle? Who may dwell in Your holy hill? He who walks uprightly, And works righteousness, And speaks the truth in his heart; He who does not backbite with his tongue, Nor does evil to his neighbor, Nor does he take up a reproach against his friend; In whose eyes a vile person is despised, But he honors those who fear the LORD; He who swears to his own hurt and does not change; He who does not put out his money at usury, Nor does he take a bribe against the innocent. He who does these things shall never be moved.

[Psalm 24:3-5] Who may ascend into the hill of the LORD? Or who may stand in His holy place? He who has clean hands and a pure heart, Who has not lifted up his soul to an idol, Nor sworn deceitfully. He shall receive blessing from the LORD,
And righteousness from the God of his salvation.

[Hebrews 12:14] Pursue peace with all people, and holiness, without which no one will see the Lord: