BDBD is Proverb 16:23

A three-step action-reaction interplay is presented. The wise’s heart guides their mouth and the mouth promotes instruction. The heart is a person’s soul, their center of being meaning their mind, will, and feelings. A person can control their heart depending on the level of discipline. Yet, even the most disciplined cannot constrain the core of their being all the time. The hidden nature is eventually revealed and words are spoken that either build up or tear down.

The key to being a blessing to others lies in allowing God to change the heart. Twice the Lord God gave a promise to his people sitting in exile through the prophet Ezekiel. “I will give you a new heart and put a new spirit in you; I will remove from you your heart of stone and give you a heart of flesh. And I will put my Spirit in you and move you to follow my decrees and be careful to keep my laws.” (Ezekiel 36:26-28) The ability to speak the best words to others is to allow the Lord to make his throne in my heart.