What is rat poison? A quick looks at the ingredients tend to list the number a 99% food and only 1% is actual position. So while most of what the rat eats is good and healthy and nutritiousness it is that little bit of poison mixed in that destroys it.
Bitterness is that 1% of poison in our actions that destroys our lives. Pastor John Samuel Barnett shows why the Christian should avoid this type of poison.
https://youtu.be/E2TkU4t73z4
(From 2015DEC13 – SWS-05 – How Are You Dressed Spiritually – Clothed With Christ’s Compassion & Rid Of Any Bitterness)