Charles H. Spurgeon on Psalms 119:36

THE WORD SET BEFORE THE HEART. Incline my heart unto thy testimonies. It is nothing for the eyes to see, for the mind to understand, nor even for the feet to be made to go in the way of truth, if the heart be not inclined thereunto also. It is with the heart that man believeth unto righteousness. To be without love is, according to 1 Corinthians 13:1-3, to be without everything.

Thus the sense of these four methodical petitions in this section is as follows: Make me to see, make me to understand, make me to go in, and make me to love to go in, the beaten and narrow path of thy testimonies. So far as I gather, Luther gives almost the exact sense of the foregoing exposition; for he translates the opening words of Psalms 119:33-36 by terms signifying respectively, "Point out to me, " "Explain to me, ""Lead me, "and "Incline (bend, slope) my heart, "etc.