Rome Against the Bible and the Bible Against Rome by William S Plumer and published by Classics.
In the days of his flesh, Jesus Christ charged upon the expounders of the Mosaic institute, that they had taken away the key of knowledge. They deprived the people of the means of attaining to the knowledge of the kingdom of God.
Sound knowledge is a key to unlock the mysteries of redemption. Without it no man can effect an entrance into life. “Where there is no vision, the people perish.” So important is divine knowledge that by a figure of speech it is often put for the whole of religion. The great duty of all religious teachers is to make known the truths of revelation, to open and explain the Scriptures. Thus men are led to understand, love and practise the will of God revealed for their salvation.
Yet in every age many slight or omit the duties of their office; while others turn light into darkness. They even obstruct the way of life. They practise all the arts of deception. With a pretended reverence for God's word, they neither love nor obey it, nor wish nor encourage others to do so.
From the Introduction