|Matthew Henry's Concise Commentary|
40:6-14 Those who profit by what they have heard from God, shall hear more from him. And those who are truly convinced of sin, yet need to be more thoroughly convinced and more humbled. No doubt God, and he only, has power to humble and bring down proud men; he has wisdom to know when and how to do it, and it is not for us to teach him how to govern the world. Our own hands cannot save us by recommending us to God's grace, much less rescuing us from his justice; and therefore into his hand we must commit ourselves. The renewal of a believer proceeds in the same way of conviction, humbling, and watchfulness against remaining sin, as his first conversion. When convinced of many evils in our conduct, we still need convincing of many more.
Verse 9. - Hast thou an arm like God? The might of God's arm is often dwelt upon in Scripture. He brought Israel out of Egypt ,' with a mighty hand and stretched-out arm" (Deuteronomy 5:15; Deuteronomy 7:19, etc.). "Thou hast a mighty arm: strong is thy hand, and high is thy right hand," says one of the psalmists (Psalm 89:13). "Awake, awake, put on strength, O arm of the Lord!" says Isaiah (Isaiah 51:9). No human strength, not the strength of all men put together, can compare with it. Or canst thou thunder with a voice like him? (comp. Job 38:34, 35; and for the idea of thunder being the actual "voice of God," see Job 37:4, 5; Psalm 68:33; Psalm 77:18, etc.).
Gill's Exposition of the Entire Bible
Hast thou an arm like God?.... Such power as he has, which is infinite, almighty, and uncontrollable, and therefore there is no contending with him; as he has an arm on which good men may lean on and trust in, and by which they are supported, protected, and saved, so he has an arm to crush like a moth all that strive with him or against him;
or canst thou thunder with a voice like him? thunder is his voice; see Job 37:4, &c. and is expressive of his power, Job 26:14; and his powerful voice may be observed in calling all things out of nothing into being in creation; in commanding and ordering all things in providence according to his pleasure; and in quickening sinners through his Gospel, by his Spirit and grace in conversion, and will be in calling men out of their graves and summoning them to judgment at the last day. God can both overpower and out voice men, and therefore it is in vain to oppose him and contend with him.
Jamieson-Fausset-Brown Bible Commentary
9. arm—God's omnipotence (Isa 53:1).
thunder—God's voice (Job 37:4).
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