Job 22:28 You will also declare a thing, and it will be established for you; so light will shine on your ways. Electricity is unbiased, and does not care what type of demand is put on it. A fan will never act like a radio, nor will electricity make a radio act like a fan. Electricity will always work according to the demand that is made on it.
The power of God operates the same way. It is controlled by your words connected with divine faith, which releases His power. When you say you can’t do something, you are allowing the power of God to work through your words, to stop the thing from being accomplished. When you say you will be able to do something, because God is going to help you, you allow the power of God to accomplish it.
God’s faith in you can be overridden by the words of your mouth. Don’t use words that will hinder God from supplying your need, instead ask Him to help you use words that are pleasing to Him, which will enable Him to honor the Scriptures you are depending on.