Doubt is a noun – a feeling of uncertainty or lack of conviction, or a verb – 1. feel uncertain about. 2. archaic usage – fear; be afraid of.
Fear, worry, and doubt go hand in hand. With doubt, one becomes fearful of the power of faith, the ability of God’s Word to deliver upon its promises. Matthew 21 is an example of how you cast it aside, believe, and speak (in Jesus’ name, with citation of relevant scripture) to the issue(s) in your life so that it may be done.
Matthew 21:21 – So Jesus answered and said to them, “Assuredly, I say to you, if you have faith and do not doubt, you will not only do what was done to the fig tree but also if you say to this mountain, ‘Be removed and be cast into the sea,’ it will be done.”
Jesus also asked His disciples, “Which of you by worrying can add one cubit to his stature? (Matt 6:27) He was reminding them that “worry” has no positive function. Worrying is simply a demonstration of doubt and some level of disbelief in the God’s ability or willingness to meet your needs or petitions. Engaging in worry is prophetic behavior inasmuch as the effectiveness of applied Faith is founded upon giving thanks and demonstrating belief. As such, worry is undercutting your petition prayers with regards to which you are told: “whoever says … and does not doubt in his heart, but believes that those things he says will be done, he will have whatever he says… ”. (see Mark 11:23-24).
Whenever fear, worry or feel doubt creep into your mind, get in touch with supportive scriptures related to the relevant issues and read them aloud. Praise and thank God for His Covenant Word, and watch it disappear. Do this as often as needed. Doubt will continue to diminish as a part of your life as you live long and prosper.