15:15-21 It is matter of comfort that we have a God, to whose knowledge of all things we may appeal. Jeremiah pleads with God for mercy and relief against his enemies, persecutors, and slanderers. It will be a comfort to God's ministers, when men despise them, if they have the testimony of their own consciences. But he complains, that he found little pleasure in his work. Some good people lose much of the pleasantness of religion by the fretfulness and uneasiness of their natural temper, which they indulge. The Lord called the prophet to cease from his distrust, and to return to his work. If he attended thereto, he might be assured the Lord would deliver him from his enemies. Those who are with God, and faithful to him, he will deliver from trouble or carry through it. Many things appear frightful, which do not at all hurt a real believer in Christ.

20, 21. The promise of Jer 1:18, 19, in almost the same words, but with the addition, adapted to the present attacks of Jeremiah's formidable enemies, "I will deliver thee out of … wicked … redeem … terrible"; the repetition is in order to assure Jeremiah that God is the same now as when He first made the promise, in opposition to the prophet's irreverent accusation of unfaithfulness (Jer 15:18).