If anyone considers himself religious and yet does not keep a tight rein on his tongue, he deceives himself and his religion is worthless. Religion that God our Father accepts as pure and faultless is this: to look after orphans and widows in their distress and to keep oneself from being polluted by the world.

James 1:26-27

Be diligent in these matters; give yourself wholly to them, so that everyone may see your progress.Watch your life and doctrine closely. Persevere in them, because if you do, you will save both yourself and your hearers.

1 Timothy 4:15-16