Is the {l} seed yet in the barn? yea, as yet the vine, and the fig tree, and the pomegranate, and the olive tree, hath not brought forth: from this day will I bless you.

(l) He exhorts them to have patience, and to remain until the harvest came, and then they would see God's blessings.

Wesley's Notes

2:19 Is the seed - Your seed for the next harvest is yet in your barns. Hath not brought forth - No sign yet appears what vintage you shall have, what store of wine, oil, figs, and pomegranates. Yet in the word of God I tell you, you shall be blest in them all, and have a large produce.

Jamieson-Fausset-Brown Bible Commentary

19. Is the seed yet in the barn?-implying, It is not. It has been already sown this month, and there are no more signs of its bearing a good crop, much less of its being safely stored in the barn, than there were in the past season, when there was such a failure; yet I promise to you from this day (emphatically marking by the repetition the connection of the blessing with the day of their obedience) a blessing in an abundant harvest. So also the vine, &c., which heretofore have borne little or nothing, shall be blessed with productiveness. Thus it will be made evident that the blessing is due to Me, not to nature. We may trust God's promise to bless us, though we see no visible sign of its fulfilment (Hab 2:3).

Matthew Henry's Concise Commentary

2:10-19 Many spoiled this good work, by going about it with unholy hearts and hands, and were likely to gain no advantage by it. The sum of these two rules of the law is, that sin is more easily learned from others than holiness. The impurity of their hearts and lives shall make the work of their hands, and all their offerings, unclean before God. The case is the same with us. When employed in any good work, we should watch over ourselves, lest we render it unclean by our corruptions. When we begin to make conscience of duty to God, we may expect his blessing; and whoso is wise will understand the loving-kindness of the Lord. God will curse the blessings of the wicked, and make bitter the prosperity of the careless; but he will sweeten the cup of affliction to those who diligently serve him.