For example, there are Christians who back out of their commitment to a ministry. Though originally led to serve in this capacity, they may question whether they have the necessary ability. Lack of assurance is also displayed when financial concerns lead a believer to stop tithing.
Doubt started in the garden of Eden when Satan introduced a question in Eve's mind: Wouldn't eating the forbidden fruit bring special benefits? And to this day, the Deceiver still whispers lies that can cause Christians' trust to falter. He will utilize any of the following to erode our confidence in God: ignorance of scripture, temptation to sin, feelings of guilt, a stronger focus on circumstances than on Christ, and the negative viewpoint of others. All of these inhibit the ability to see truth clearly and to stand firmly upon it.
While a doubter is characterized by negativity, uncertainty, and instability, a believer with full trust in God walks in absolute confidence—decisive, dependent upon the Word, and capable of enduring, even when circumstances seem gloomy.
The Christian walk should be characterized by faith, not doubt. Have you prayed for something but questioned whether the Lord would answer—or disbelieved He would actually do something He promised in scripture? Resist doubt, and take hold of the unshakeable confidence God offers.