He that hath clean hands, and a pure heart; who hath not lifted up his soul unto vanity, nor sworn deceitfully. He that hath clean hands - He whose conscience is irreproachable; whose heart is without deceit and uninfluenced by unholy passions.
Who hath not lifted up his soul - Who has no idolatrous inclination; whose faith is pure, and who conscientiously fulfils his promises and engagements.