Also want to say that words that are not from faith are manifestations that will be judged.
"But I tell you that every careless word that people speak, they shall give an accounting for it in the day of judgment.
37"For by your words you will be justified, and by your words you will be condemned (Matthew 12:26).
Evil words (not in faith of God words) are a dichotomy to the Word which is salvation, faith, the manifest (begotten truth), that is Jesus. In Him our words are power and truth, light and life for they are from His mind and His Spirit.
"In the beginning was the Word, and the Word was with God, and the Word was God" (John 1:1). "In him was life, and that life was the light of all mankind" (John 1:4).
The believer is in the Word whose words are all righteous so they are justified (the true confession of salvation is actually as a result of faith in the words of God's Spirit).
The power over principalities, evil powers etc. comes from the righteous one, not doctrines being spoken from the mind (even if doctrines are correct) , but words of life being spoken from God's Spirit through us (which are living doctrines).
"The tongue has the power of life and death, and those who love it will eat its fruit" (Proverbs 18:21).
Each person can choose the words of life from the Word, the Spirit of good fruit (the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, 23 gentleness and self-control. Against such things there is no law [Galatians 5:22-23]), or the words of death (sin and the fruit of sin which is destruction, separation from God, and death spiritually).
Words are spiritual.