Not everything is solved by thinking. Sometimes we can think too long or hard. In some ways, the more we think, the more we complicate the simplicity of the Good News. As soon as understanding occurs, action is necessary. Thinking can be an attempt to stall and balk at obedience.
This is not an argument against thinking. We must use the mind — more than we do, usually — to comprehend the truths of God. We must separate human religion from divine revelation. But this is not a hard or protracted process. Once the Word is understood, obedience must soon follow, else the old man rises up to object and obstruct.