John Gill's Bible Commentary Ver. 8. With him is an arm of flesh , etc.] Only weak, frail, mortal men, not at all to be feared; nothing in comparison of the Lord: but with us is the Lord our God, to help us, and to fight our battles ; who is the Lord God Almighty, who has the host of heaven at his command, and with whom all the inhabitants of the earth are as nothing; the Targum is, “the Word of the Lord our God is for us to help us, and fight our battles:” and the people rested themselves upon the words of Hezekiah king of Judah ; not upon his bare words, but on what was contained in them, on the strength and power of the Lord God he assured them was on their side; they believed what he said to be true, and trusted in the Lord that he would save them.
Matthew Henry Commentary
Verses 1-23 - Those who trust God with their safety, must use proper means, else the tempt him. God will provide, but so must we also. Hezekiah gathered his people together, and spake comfortably to them. A believing confidenc in God, will raise us above the prevailing fear of man. Let the goo subjects and soldiers of Jesus Christ, rest upon his word, and boldl say, Since God is for us, who can be against us? By the favour of God enemies are lost, and friends gained.
Original Hebrew עמו5973 זרוע2220 בשׂר1320 ועמנו5973 יהוה3069 אלהינו430 לעזרנו5826 ולהלחם3898 מלחמתנו4421 ויסמכו5564 העם5971 על5921 דברי1697 יחזקיהו2396 מלך4428 יהודה׃3063