I Jehovah keep it. Here the Lord asserts his care and diligence in dressing and guarding the vine, as if he had said, that he left nothing undone that belonged to the duty of a provident and industrious householder. Not only does he testify what he will do, when the time for gladness and congratulation shall arrive, but he relates the blessings which the Jews had already received, that their hope for the future may be increased. Yet we must supply an implied contrast with the intermediate period, during which God appeared to have laid aside all care of it, so that at that time it differed little from a wilderness. This then is the reason why the Lord's vineyard was plundered and laid waste; it was because the Lord forsook it, and gave it up as a prey to the enemy. Hence we infer that our condition will be ruined as soon as the Lord has departed from us; and if he assist, everything will go well. I will water it every moment. He next mentions two instances of his diligence, that he "will water it every moment," and will defend it against the attacks of robbers and cattle and other annoyances. These are the two things chiefly required in preserving a vineyard, cultivation and protection. Under the word water he includes all that is necessary for cultivation, and promises that he will neglect nothing that can carry it forward. But protection must likewise be added; for it will be to no purpose to have cultivated a vineyard with vast toil, if robbers and cattle break in and destroy it. The Lord, therefore, promises that he will grant protection, and will not permit it to suffer damage, that the fruits may ripen well, and may be gathered in due season. Though the vine may suffer many attacks, and though enemies and wild beasts may assail it with great violence, God declares that he will interpose to preserve it unhurt and free from all danger. Moreover, since he names a fixed day for singing this song, let us remember that, if at any time he cease to assist us, we ought not entirely to cast away hope; and therefore, if he permit us to be harassed and plundered for a time, still he will at length shew that he has not cast away all care of us.

I the Lord do keep it - There is understood here or implied an introduction; as 'Yahweh said' (compare Psalm 121:3-5).
I will water it every moment - That is, constantly, as a vinedresser does his vineyard.

Lest any hurt it, I will keep it night and day - "I will take care of her by night; and by day I will keep guard over her" - For פן יפקד pen yiphkod, lest any visit it, the Syriac read ואפקד veephkod, and I will visit it. Twenty MSS. of Kennicott's, fourteen of De Rossi's, and two of my own, and six editions read אפקד ephkod, I will visit, in the first person.

I the Lord do keep it,.... The vineyard, the church, not only by his ministers, called the keepers of it, Song 8:12 but by himself, by his own power; for unless he keeps it, who is Israel's keeper, the watchmen wake in vain; he keeps his church and people from sin, that it does not reign over them; and from Satan's temptations, that they are not destroyed by them; and from the malice of the world, and the poison of false teachers, that they are not ruined thereby; and from a final and total falling away; the Lord's preservation of his church and people will be very manifest in the latter day:
I will water it every moment; both more immediately with the dews of his grace, and the discoveries of his love; that being like dew, it comes from above, is according to the sovereign will of God, without the desert of man falls in the night, silently, gently, and insensibly, and greatly refreshes and makes fruitful, Hosea 14:5 and more immediately by the ministry of the word and ordinances, by his ministers, the preachers of the Gospel, who water as well as plant, 1-Corinthians 3:6 these are the clouds he sends about to let down the rain of the Gospel upon his church and people, by which they are revived, refreshed, and made fruitful, Isaiah 5:6 and this being done "every moment", shows, as the care of God, and his constant regard to his people, so that without the frequent communications of his grace, and the constant ministration of his word and ordinances, they would wither and become fruitless; but, by means of these, they are as a watered garden, whose springs fail not, Isaiah 58:11,
lest any hurt it; as would Satan, who goes about as a roaring lion, seeking whom he may devour; and the men of the world, who are the boar out of the wood, and the wild beast out of the field, that would waste and destroy the vineyard; and false teachers, who are the foxes that would spoil the vines, 1-Peter 5:8 but, to prevent any such hurt and damage, the Lord undertakes to keep the church, his vineyard, himself, which he repeats with some addition, to declare the certainty of it; or, "lest he visit it" (m); that is, an enemy, as some (n) supply it; lest he should break down the hedge, and push into it, and waste it; or Jehovah himself, that is, as Gussetius (o) interprets it, while Jehovah the Father, Isaiah 27:1, is striking leviathan, or inflicting his judgments upon his enemies, Jehovah the Son promises to take care of his vineyard, the church, that the visitation does not affect them, and they are not hurt by it, but are safe and secure from it; which is a much better sense than that of Kimchi mentioned by him, I will water it every moment, "that not one leaf of it should fail"; the same is observed by Ben Melech, as the sense given by Donesh Ben Labrat:
I will keep it night and day; that is, continually, for he never slumbers nor sleeps; he has kept, and will keep, his church and people, through all the vicissitudes of night and day, of adversity and prosperity, they come into: how great is the condescension of the Lord to take upon him the irrigation and preservation of his people! how dear and precious must they be to him! and what a privilege is it to be in such a plantation as this, watered and defended by the Lord himself!
(m) "ne forte visitet eum", Munster, Pagninus, Tigurine version. (n) So Munster, Pagninus, Vatablus, and Ben Melech. (o) Comment. Ebr. p. 668, 669.

lest any hurt it--attack it [MAURER]. "Lest aught be wanting in her" [HORSLEY].

I keep it - I will protect my church from all her enemies, and supply her with all necessary provisions.