Men may have a multitude of thoughts about the affairs of their callings and the occasions of life, which yet may give no due measure of the inward frame of their hearts. So men whose calling and work it is to study the Scripture, or the things revealed therein, and to preach them unto others, cannot but have many thoughts about spiritual things, and yet may be, and oftentimes are, most remote from being spiritually minded.
This is the famous Nottingham sermon that Tennant preached that caused a lot of controversy, nothing is held back.
Men walk and talk as if the world were all, when comparatively it is nothing. And when men come with their warmed affections, reeking with thoughts of these things, unto the performance of or attendance unto any spiritual duty, it is very difficult for them, if not impossible, to stir up any grace unto a due and vigorous exercise. Unless this plausible advantage which the world hath obtained of insinuating itself and its occasions into the minds of men, so as to fill them and possess them, be watched against and obviated,
so far, at least, as that it may not transform the mind into its own image and likeness, this grace of being spiritually minded, which is life and peace,
cannot be attained nor kept unto its due exercise. Owen