“After Jesus had spoken, a Pharisee invited him to dine at his home. He entered and reclined at table to eat. The Pharisee was amazed to see that he did not observe the prescribed washing before the meal. The Lord said to him, "Oh you Pharisees! Although you cleanse the outside of the cup and the dish, inside you are filled with plunder and evil. You fools! Did not the maker of the outside also make the inside? But as to what is within, give alms, and behold, everything will be clean for you." -Luke 11:37-41
When we claim to be a follower of Christ with just our mouths but do not back it with actions, we are like the Pharisee. To be clean on the inside we must give from our soul, and then our words will carry weight.
"Indeed someone may say, “You have faith and I have works.” Demonstrate your faith to me without works, and I will demonstrate my faith to you from my works.” -James 2:18