John Gill Commentary Isaiah 8:10

"Take counsel together, and it shall be brought to nought; speak the word, and it shall not stand: for God is with us." — Isaiah 8:10 (ASV)

Take counsel together As Rezin king of Syria, and Remaliah's son, did against Judah, (Isaiah 7:5).

it shall come to nought; for, though they came up against it, they could not overcome it, (2 Kings 16:5).

speak the word; what they intended, resolved upon, and determined to do; this is the issue of their counsels: and it shall not stand; (See Gill on Isaiah 7:7).

for God is with us; which is the interpretation of the name "Immanuel": and which shows that the reason why the consultations and resolutions of the enemies of Judah could not take place, so as to destroy it, was because Immanuel, the virgin's son, was to be born in it.