Proverbs 4:23 Amplified Bible (AMP)
Watch over your heart with all diligence,
For from it flow the springs of life.
It is every christian’s duty to watch how they walk, how they talk, how they take decisions.
In other words, there’s no way one can diligently guard a heart that doesn’t have Jesus, give your heart to the saviour.
Then you won’t just talk, some things are just to be kept to ourselves, lest they destroy the church, brethren or families.
Your heart is your responsibility.