God's self-sufficiency means He needs nothing outside of Himself, being complete and perfect in His nature.
When we speak of God's self-sufficiency, we assert that He is perfectly complete within Himself, lacking nothing. This is foundational to who God is; He exists in need of nothing and no one. In Isaiah 40:15-17, God expresses His sovereignty, saying, 'All nations before Him are as nothing.' His creation, including humanity, does not add to His glory nor provide any need that He has. Instead, anything given to Him is a result of His prior provision to us. Understanding God's self-sufficiency fosters a correct view of our dependence on Him; we rely on His grace for everything, just as Job asked, 'If thou be righteous, what givest thou Him?' This emphasizes that it is ultimately God who gives and sustains all.
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