signifying the vast abundance of the increase and produce of Job's kine; who is said to wash his feet in milk or butter, as Asher is said to dip his feet in oil, because of the great plenty of it, De 33:24; the spiritual meditation upon the words may be this; the feet of the best of saints need washing, there being many failings and infirmities in their walk and conversation; in which they gather much pollution and faith daily; the proper wash for this is the blood of Christ, of which the layer in the tabernacle and temple was a type, at which the priests washed their hands and feet; but the word of God, called the sincere milk of the word, is the instrument or means of washing, or of directing souls to the fountain opened to wash in; so that with respect to that, the feet of saints, as the eyes of Christ, may be said to be washed with milk:and the rock poured me out rivers of oil; another hyperbolical expression, like that in De 32:13, where honey is said to be sucked out of the rock, and oil out of the flinty rock; as honey may be got out of a rock, because bees may make their nests and hives there, where it is laid up by them; so oil, in like manner, may be had from the flinty rock, olive trees growing on hills, mountains, and rocks, which yield oil in great abundance; near Jerusalem was a mount called Olivet, from thence: the land of Edom, or Idumea, where Job lived, abounded with cragged mountains and rocks; and there might be in Job's estate such on which olive trees grew in great plenty, as to produce vast quantities of oil: it is a very fanciful thought of Bolducius, that this rock was no other than a stone vessel, in which was oil, somewhat like the alabaster box in Mt 26:7; and which was plentifully poured on Job, when he was anointed high priest; and another learned man , though he rejects the notion of its being a vessel for sacred use, yet is willing to allow it was an oil vessel for common use: as to the spiritual sense, it may be observed, that a rock in Scripture often signifies a divine Person, 1Co 10:4; it is an emblem of Christ, as oil also is of the Spirit of God and his grace, Mt 25:3; and which flows from Christ, who is full thereof, and that in such great abundance, as to be expressed by rivers; see Joh 1:14.
Fortunat. Schacch. Elaeochrysm. Myroth. l. 2. c. 79. p.