Let your eyes look directly forward, and your gaze be straight before you.
Shun evil if you will, but that is not enough; you must actively study the methods of duty. Bend your ear to wisdom's sayings, lodge them deep in your heart as commanding principles, and let them remain fixed before your eyes. They are both food and medicine to the soul: the nourishment by which spiritual life is sustained, and the healing by which the whole man is restored.
AI summary
Commenting on Proverbs 4:20-27
Let thine eyes look right on,.... To the path of truth and holiness, without turning or looking to the right hand or left, as it is afterwards expressed; to the word of truth, as the rule to walk by; to Christ, the author and finisher of faith, from whom all grace, and the supplies of it, are to be had; and to the mark, for...
Let . . . before thee--that is, pursue a sincere and direct purpose, avoiding temptations.