Double Standards
Sinful human nature enjoys double standards, so much so that the problem can be found in everybody (Romans 3:10). The Pharisee who invited Jesus for conversation over a meal followed strict religious rules about washing before eating. This was not a matter of personal hygiene but to ensure that the food was not ritually contaminated by any possible contact with 'unclean' things which may have been accidentally touched along the way. It was ‘holiness by ritual’ which involved no change of heart; and therefore, it was not holiness at all.