Psalm 24:4

He who has clean hands and a pure heart, who has not lifted up his soul to what is false, nor has sworn (oaths) deceitfully. He shall receive blessing from the Lord, and righteousness from the God of his salvation.  

A person with clean hands isn’t willing to do evil or manipulate others to get their way and has a pure heart. Christianity isn’t just giving lip service to the faith and attending church occasionally. Christianity is conducting our lives according to biblical values. Values that we have in our hearts.