John Gill

And shall put my spirit in you, and ye shall live,.... Not only a spirit of courage to go up into their own land, and live a civil and comfortable life there; but the Spirit of God, as a spirit of grace and supplication, of truth and holiness, of faith and adoption; and as a spirit of life, having produced a principle of life in them, and so should live spiritually and soberly, righteously and godly; see Eze 36:27, and I shall place you in your own land; settle them there in peace and quietness, in safety and security and in enjoyment of all mercies and privileges, temporal and spiritual: then shall ye know that I the Lord have spoken it, and performed it, saith the Lord; that all this was a promise of his, foretold by him, notified to them by his prophets, and now fully accomplished exactly; which they would observe with wonder and thankfulness, and give him the glory of it.