This is a very deep prayer although of few words. A prayer from the heart that fears God and is aware of the powerful tools both the mouth and heart are. One of the Christian guidelines is that “with our mouth we confess what we believe in our heart”. Therefore I believe that, whatever the mouth speaks must have been conceived in the heart unless a person is without a “Sound Mind”. Speech is controlled by the tongue and the Bible tells us that “life and death is in the power of the tongue” and who can tame the tongue but the Holy Spirit that teaches All things. The Holy Spirit enables us to exercise self control when the heart, is engineered by the mind to brew unholy thoughts. The Word of God says in Jeremiah 17:9
“The heart is deceitful above all things, and desperately wicked: who can know it”? Our Lord Jesus confirmed this in Mark 7:21 “For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders ….”.
This for me, makes the plea in Psalm 19:14 a very potent prayer, that by the Mercy of God, our spoken and unspoken words will not judge nor speak against us in Jesus name. Amen. For HE says:
“I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings”. -Jeremiah 17:10
I pray that the Lord creates in us a new heart, purifying us from a wicked heart and evil thoughts, so that our mouth will confess that which is acceptable to Him and is edifying to man.
Blessings