Praying and Doing Things in Doubt Is Sin

James 1:6-7 (Good News Bible)
But when you pray, you must believe and not doubt at all. Whoever doubts is like a wave in the sea that is driven and blown about by the wind. If you are like that, unable to make up your mind and undecided in all you do, you must not think that you will receive anything from the Lord.

This verse instructs us to believe without doubt that when we pray for something it will be done. The same goes for when we do things. For it is written that if we are undecided in all we do, we must not think that we will receive anything from the Lord.

Romans 14:23 (Good News Bible), although it refers to things we eat or drink, goes on to say: “But if they have doubts about what they eat, God condemns them when they eat it, because their action is not based on faith. And anything that is not based on faith is sin.”

The focus on this verse would be “...because their action is not based on faith. And anything that is not based on faith is sin.”...

So we can now conclude, without doubt, that praying or doing anything in doubt is sin. I am reminded of a question someone once asked me...

He asked, “What is faith? Faith is not believing that He might, but believing that He WILL!”