Job 18:5

and may be called the candle of the Lord, because it is from him, it is of his lighting and setting up; and its shining on his head may denote the large measure and degree of it possessed by him, in allusion to torches carried on high to light with; or lamps, or candles, set up in the higher part of the house to give the more light; or to the sun in the firmament, and especially when in its meridian, and shines clearest right over our heads, and casts no shadow: or else it may be understood of light in a figurative sense, not of the light of nature in men, which, though called the candle of the Lord, Pr 20:27; yet, in man's fallen state, shines not clearly; and with respect to this there was no difference in Job than heretofore; but rather it is the light of grace, the true light, which had shone upon him and in him, but now not so clearly as formerly, and as he could wish for; or else the word of God, which is a light unto the feet, and a lamp to the path; or it may be, best of all, the favour of God, the light of his countenance he had before enjoyed, having had a comfortable display of his love, a clear view of interest in it, and had the blessings of it bestowed upon him, and enjoyed by him; and nothing was more desirable by him, as is by every good man, than the return of the light of God's countenance; and that he might be remembered with his special favour, as his people are, and as he had been in times past:[and when] by his light I walked [through] darkness; that is, either by the light of outward prosperity he had escaped those calamities, distresses, and dangers, and got over those difficulties which attended others, though now surrounded with them; or by the light of divine grace, or of the word of God, and especially by and in the light of God's countenance, he walked cheerfully and comfortably, without any fear of the darkness of affliction and calamities, or of the dark valley of the shadow of death, or of the prince of darkness, or of the darkness of hell and damnation; but now clouds of darkness being about him, and he without the light of God's countenance, could not see the way in which he walked and therefore wished that that again might be lifted up upon him