Commentaries:
Barnes' Notes
For in that day - That is, in the invasion of Sennacherib, and the events that shalt be consequent thereon.
Every man shall cast away his idols - (see the note at Isaiah 30:22; compare the note at Isaiah 2:20).
For a sin - Or rather, the sin which your own hands have made. The sense is, that the making of those idols had been a sin, or sin itself. It had been "the" sin, by way of eminence, which was chargeable upon them.
Other Barnes' Notes entries containing Isaiah 31:7:
2 Kings 18:29-30
Isaiah 33:14
1 Corinthians 8:4
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