Without Christ, sciences in every department are vain....The man who knows not God is vain, though he should be conversant with every branch of learning. Nay more, we may affirm this too with truth, that these choice gifts of God expertness of mind, acuteness of judgment, liberal sciences, and acquaintance with languages, are in a manner profaned in every instance in which they fall to the lot of wicked men.
The sum is, that the worship of God must be spiritual, in order that it may correspond with His nature. For although Moses only speaks of idolatry, yet there is no doubt but that by synecdoche, as in all the rest of the law, he condemns all fictitious services which men in their ingenuity have invented.
For Scripture is the school of the Holy Spirit, in which, as nothing is omitted that is both necessary and useful to know, so nothing is taught but what is expedient to know. Therefore we must guard against depriving believers of anything disclosed about predestination in Scripture, lest we seem either wickedly to defraud them of the blessing of their God or to accuse and scoff at the Holy Spirit for having published what it is in any way profitable to suppress.