John Gill's Exposition of the Whole Bible
Psalms 128:3
Thy wife [shall be] as a fruitful vine by the sides of thine house,.... The vine being a weak and tender tree, which needs propping and supporting; and often is fastened to the sides of a house, to which the allusion here is; whereunto it cleaves, and on which it runs up, and bears very agreeable fruit; it is properly used to express the weakness and tenderness of the female sex, their fruitfulness in bearing children, and their care of domestic affairs, being keepers at home; see 1 Peter 3:7. Kimchi observes, that the vine is the only tree men plant within doors; which, when it is grown up, they bring out at a hole or window of the house without, to have the sun and air; and so its root is within the house, and the branches without: and he observes, that a modest woman is within the house, and does not go without, and is only seen by her husband; but her children, like the branches of the vine, go out to work. This may be applied to Christ and his church; to him the other characters agree: he, as man, is one that feared the Lord; the grace of fear was in him; the spirit of fear rested on him; and he was in the exercise of it, and walked in all the ways of the Lord, Isaiah 11:1; he now sees and enjoys the travail or labour of his soul to satisfaction, and is made most blessed for evermore, Isaiah 53:11. The church is the bride, the Lamb's wife, the spouse of Christ; and may be compared to a vine for her weakness in herself, her fruitfulness in grace and good works, and in bringing forth souls to Christ, through the ministry of the word; all which is pleasant and grateful to him; see Psalms 80:14;
thy children like olive plants round about thy table; a numerous offspring was always accounted a very great blessing; and it must be very pleasant to a parent to see his children round about his table, placed in their proper order according to their age, partaking of what it is furnished with: Job, in his time of prosperity, had many children; and, next to the presence of the Almighty with him, he mentions this of his children being about him; see Job 1:2. This may be applied to the spiritual seed and offspring of Christ, which are like to olive trees or olive plants; to which David is compared,
Psalms 52:8; the two anointed ones in Zechariah 4:11; the two witnesses in Revelation 11:4; and all true believers in Christ may; because of their excellency, these being choice plants; because of their fruitfulness and beauty; because of their fatness, and having oil in them; and because of their perpetuity, being ever green; see Jeremiah 11:16. Now Christ has a table, which he has well furnished, at which he himself sits, and places these his children all around; and whom he welcomes to the entertainment he makes, and takes delight and pleasure in them, Song of Solomon 1:12. Kimchi observes, the olive trees do not admit of a graft from other trees; see Romans 11:24; and so this denotes the legitimacy of those children, being free from all suspicion of being spurious, being born of such a wife as before described; and being green and moist all the year long, denotes their continuance in good works.