Fear not ... - (See Isaiah 41:10, note, Isaiah 41:14, note).
Neither shalt thou be confounded - All these words mean substantially the same thing; and the design of the prophet is to affirm, in the strongest possible manner, that the church of God should be abundantly prospered and enlarged. The image of the female that was barren is kept up, and the idea is, that there should be no occasion of the shame which she felt who had no children.
For thou shalt forget the shame of thy youth - In the abundant increase and glory of future times, the circumstances of shame which attended their early history shall be forgotten. The ‘youth’ of the Jewish people refers doubtless to the bondage of Egypt, and the trials and calamities which came upon them there. So great should be their future prosperity and glory, that all this should be forgotten.
The reproach of thy widowhood - The captivity at Babylon, when they were like a woman bereft of her husband and children (see the notes at Isaiah 49:21).