Charles H. Spurgeon on Psalms 119:18

Open thou mine eyes. Who is able to know the secret and hidden things of the Scriptures unless Christ opens his eyes? Certainly, no one; for "No man knoweth the Son but the Father; neither knoweth any man the Father save the Son, and he to whom the Son will reveal him." Wherefore, as suppliants, we draw near to him, saying, "Open thou mine eyes, "etc. The words of God cannot be kept except they be known; neither can they be known unless the eyes shall be opened, hence it is written, "That I may live and keep thy word"; and then, "Open thou mine eyes." Paulus Palanterius.