The Psalmist asks for no new revelation. It was in God's hand to give this, and he did it in his own time to those ancient believers; but to all of them at every time there was enough given for the purposes of life. The request is not for more, but that he may employ well that which he possesses. Still better does such a form of request suit us, to whom life and immortality have been brought to light in Christ. If we do not find sufficient to exercise our thoughts with constant freshness, and our soul with the grandest and most attractive subjects, it is because we want the eye sight. It is of great importance for us to be persuaded of this truth, that there are many things in the Bible still to be found out, and that, if we come in the right spirit, we may be made discoverers of some of them. These things disclose themselves, not so much to learning, though that is not to be despised, as to spiritual sight, to a humble, loving heart.
And this at least is certain, that we shall always find things that are new to ourselves. However frequently we traverse the field, we shall perceive some fresh golden vein turning up its glance to us, and we shall wonder how our eyes were formerly holden that we did not see it. It was all there waiting for us, and we feel that more is waiting, if we had the vision. There is a great Spirit in it that holds deeper and even deeper converse with our souls.
This further may be observed, that the Psalmist asks for no new faculty. The eyes are there already, and they need only to be opened. It is not the bestowal of a new and supernatural power which enables a man to read the Bible to profit, but the quickening of a power he already possesses. In one view it is supernatural, as God is the Author of the illumination by a direct act of his Spirit; in another it is natural, as it operates through the faculties existing in a man's soul. God gives "the spirit of wisdom and revelation in the knowledge of Christ, that the eyes of man's understanding may be enlightened." (Ephesians 1:17) It is important to remember this also, for here lies our responsibility, that we have the faculty, and here also is the point at which we must begin action with the help of God. A man will never grow into the knowledge of God's word by idly waiting for some new gift of discernment, but by diligently using that which God has already bestowed upon him, and using at the same time all other helps that lie within his reach. There are men and books that seem, beyond others, to have the power of aiding insight. All of us have felt it in the contact of some affinity of nature which makes them our best helpers; the kindred clay upon the eyes by which the great Enlightener removes our blindness (John 9:6). Let us seek for such, and if we find them let us employ them without leaning on them. Above all, let us give our whole mind in patient, loving study to the book itself, and where we fail, at any essential part, God will either send his evangelist Philip to our aid (Acts 8:26-40) or instruct us himself. But it is only to patient, loving study that help is given. God could have poured all knowledge into us by easy inspiration, but it is by earnest search alone that it can become the treasure of the soul.
But if so, it may still be asked what is the meaning of this prayer, and why does the Bible itself insist so often on the indispensable need of the Spirit of God to teach? Now there is a side here as true as the other, and in no way inconsistent with it. If prayer without effort would be presumptuous, effort without prayer would be vain. The great reason why men do not feel the power and beauty of the Bible is a spiritual one. They do not realize the grand evil which the Bible has come to cure, and they have not a heart to the blessings which it offers to bestow. The film of a fallen nature, self maintained, is upon their eyes while they read: "The eyes of their understanding are darkened, being alienated from the life of God" (Ephesians 4:18). All the natural powers will never find the true key to the Bible, till the thoughts of sin and redemption enter the heart, and are put in the centre of the Book. It is the part of the Father of lights, by the teaching of his Spirit, to give this to the soul, and he will, if it humbly approaches him with this request. Thus we shall study as one might a book with the author at hand, to set forth the height of his argument, or as one might look on a noble composition, when the artist breathes into us a portion of his soul, to let us feel the centre of its harmonies of form and colour. Those who have given to the Bible thought and prayer will own that these are not empty promises. John Ker, in a Sermon entitled, "God's Word Suited to Man's Sense of Wonder," 1877.
This is possibly John Ker of Glasglow