Charles Spurgeon Commentary Isaiah 35:4

"Say to them that are of a fearful heart, Be strong, fear not: behold, your God will come [with] vengeance, [with] the recompense of God; he will come and save you." — Isaiah 35:4 (ASV)

It is very singular how salvation and vengeance are so often associated together in Scripture. It is the day of salvation, and the day of vengeance of our God to comfort all that mourn. Vengeance upon the false is the best consolation to the true. When God smites the sham, even to the heart, then does he bless that in which the truth is found. He will come and save you.