(26) Upon this I awaked . . .--The words that follow have been very differently interpreted. By some writers (Rosenmller) they have been referred to Jehovah under the figure of the husband who has dreamt of his wife's return. Others (Ewald) have seen in them a quotation from some well-known psalm or hymn, like Psalm 17:15, indicating that in the golden days to which Jeremiah looked forward there should be freedom even from the evil and dark dreams of a time of peril, so that every man should be able to give thanks for the "sweet" gift of sleep (Psalm 127:2). It is, however, far more natural to take them as the prophet's own words. The vision of a restored Israel, such as he paints it in the preceding verses, had come to him in his sleep. (See Jeremiah 23:28; Joel 2:28, as to this mode of revelation.) And when he woke up there was no sense of bitter disappointment like that of the dreamer described in Isaiah 29:8. The promise that came to him when he woke was as distinct and blessed as the dream had been. The "sweet sleep" has its parallel in Proverbs 3:24.

Pulpit Commentary

Verse 26. - Upon this I awaked, etc. Who the speaker is here has been much debated. That Jehovah is meant is not an admissible view. A weak believer may say complainingly, "Why sleepest thou?" but God himself cannot be represented under the image of a sleeper. There seems, however, to be no reason why the prophet should not have used this language. The doubt is whether a real, physical sleep is meant, or merely an ecstatic condition resembling sleep. Hengstenberg decides for the latter. But there is no parallel for sleep in the sense of ecstasy, and, on the other hand, there is evidence enough for dreams as the channels of Divine revelation (Genesis 31:10, 11; 1 Kings 3:5; 1 Kings 9:2; Joel 2:28). As Naegelsbach points out, this is the only unqualifiedly comforting prophecy in the whole book, and may well have left a sweet savour in the prophet's memory. Stern, indeed, was the reality which the moment of his waking brought back to him.

Matthew Henry's Concise Commentary

31:21-26 The way from the bondage of sin to the liberty of God's children, is a high-way. It is plain, it is safe; yet none are likely to walk in it, unless they set their hearts towards it. They are encouraged by the promise of a new, unheard-of, extraordinary thing; a creation, a work of Almighty power; the human nature of Christ, formed and prepared by the power of the Holy Ghost: and this is here mentioned as an encouragement to the Jews to return to their own land. And a comfortable prospect is given them of a happy settlement there. Godliness and honesty God has joined: let no man think to put them asunder, or to make the one atone for the want of the other. In the love and favour of God the weary soul shall find rest, and the sorrowful shall find joy. And what can we see with more satisfaction than the good of Jerusalem, and peace upon Israel?

Gill's Exposition of the Entire Bible

Upon this I awakened, and beheld,.... When or after he beheld or had seen the vision and prophecy concerning the incarnation of Christ, and the glory and happiness of his church and people in the latter day, he awoke; for it seems the prophecy contained in this and the preceding chapter was delivered to Jeremiah in a dream; who, when he had seen the vision, and upon the last words being spoken to him, awoke out of it:

and my sleep was sweet unto me; as it must needs be, to have so many gracious promises, and glorious prophecies, delivered to him in it. Some understand the words, that when he awoke out of sleep, he saw and considered with pleasure what had been made known to him; and then fell into a sweet sleep again, which was not usual with him. To which the Targum inclines,

"the prophet said, because of this good news of the days of consolation (that is, the days of the Messiah) that should come, I was raised up, and saw; again I slept, and my sleep was profitable to me.''

So Kimchi. Some interpret the words of Christ, and of his sleep in the grave.

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