Charles H. Spurgeon on Psalms 40:3

Many shall see it, and fear, and shall trust in the Lord. First of all they see. Their eyes are opened; and their opened eyes see and survey what they are, where they are, whence they came, and whither they are going...When the attention of sinners is really and decisively arrested by the propitiation of Jesus, not only are their eyes opened to their various moral relations, not only do they "see" but they fear too. They "see" and "fear." ...Conviction follows illumination...But while the sinner only sees and fears, he is but in the initial stage of conversion, only in a state of readiness to flee from the city of destruction. He may have set out on his pilgrimage, but he has not yet reached his Father to receive the kiss of welcome and forgiveness. The consummating step has not yet been taken. He has seen indeed; he has feared too; but he still requires to trust, to trust in the Lord, and banish all his fears. This is the culminating point in the great change; and, unless this be reached, the other experiences will either die away, like an untimely blossom, or they will only be fuel to the unquenchable fire. James Frame.