Jeremiah 50:20

In those days, and in that time... — The formula is that which in prophetic language points to the far-off times of the Christ. Their restoration to their earthly homes was but a small thing. That which was to the prophet the great blessing of the future was that it would bring with it the New Covenant of Jeremiah 31:31, pardon and peace, iniquity and sin remembered no more.

I will pardon them whom I reserve. — The latter verb contains the root of the “remnant” which is so prominent in Isaiah (Isaiah 1:9; Isaiah 7:3), and expresses the same thought. “The remnant,” the reserved ones, shall be pardoned.