(21) Thine ears shall hear a word behind thee.--The voice of the human teacher on whom the people looked as they listened would find an echo in that inner voice telling them which was the true way, when they were tempted to turn to the right hand or the left.

Verse 21. - Thine ears shall hear a word behind thee. Kay says, "The teacher will go before his flock, marking out the way before them." But in that case, the flock would hear the word before them. Delitzsch explains better, "They (the teachers), as the shepherds of the flock, would follow the people with friendly words of admonition." Even in the East, shepherds sometimes follow their flocks (see Genesis 32:17). When ye turn, i.e. when ye are about to turn.

30:19-26 God's people will soon arrive at the Zion above, and then they will weep no more for ever. Even now they would have more comfort, as well as holiness, if they were more constant in prayer. A famine of bread is not so great a judgment as a famine of the word of God. There are right-hand and left-hand errors; the tempter is busy courting us into by-paths. It is happy if, by the counsels of a faithful minister or friend, or the checks of conscience, and the strivings of God the Spirit, we are set right when doubting, and prevented from going wrong. They shall be cured of their idolatry. To all true penitents sin becomes very hateful. This is shown daily in the conversion of souls, by the power of Divine grace, to the fear and love of God. Abundant means of grace, with the influences of the Holy Spirit, would be extended to places destitute of them. The effect of this should be comfort and joy to the people of God. Light, that is, knowledge, shall increase. This is the light which the gospel brought into the world, and which proclaims healing to the broken-hearted.And thine ears shall hear a word behind thee,.... Which may be said in reference to the backsliding and declining state of the people, Isaiah 30:11 and is thought by some to be an allusion to schoolmasters, who stand behind their scholars, or at their backs, to guide, teach, and instruct them; and by others to shepherds following their flocks, who, when they observe any of the sheep going out of the way, call them back; or to travellers, who, coming to a place where are several ways, and being at a loss which way to take, and inclining to turn to the right or left, are called to by persons behind them, and directed in the right way. This "voice behind" is by the Jews (e) interpreted of Bath Kol; and by others of the voice of conscience; but it rather intends the Spirit of God, and his grace; though it seems best to understand it of the Scriptures of truth, the word of God, the only rule of faith and practice; the language of which is,

saying, This is the way, walk ye in it; it directs to Christ the way, and who is the only way of life and salvation to be walked in by faith, and to all the lesser paths of duty and doctrine, which to walk in is both pleasant and profitable, and which is the right way; so the Targum paraphrases it,

"this is the right way;''

to which agree the comments of Aben Ezra, Jarchi, and Kimchi; though the Arabic and Syriac versions, following the Septuagint, represent them as the words of seducers, directing to a wrong way: but the words are a promise of being led right, and not a threatening of being led wrong:

when ye turn to the right hand, and when ye turn to the left; through ignorance or inadvertency, through the prevalence of corruption, or force of temptation; and as it is promised there should be such a voice, so they should have ears to hear, their ears erect to attend to what is said, to observe it, and act according to it.

(e) T. Bab. Megilla, fol. 32. 1.