We know that there are power in our words. We also know that when we declare what God is saying we speak His Kingdom into being.
Job 22:28 – You will also declare a thing, and it will be established for you; so light will shine on your ways. NKJV
Proverbs 18:21 – Death and life are in the power of the tongue
2 Corinthians 4:13 – But having the same spirit of faith, according to what is written, “I believed, therefore I spoke,” we also believe, therefore we also speak