What is the meaning of Isaiah 40:28? Do you not know? Isaiah opens with a loving but firm reminder that God’s character is already evident. Creation itself proclaims His reality (Romans 1:19-20) and history testifies to His works (Psalm 77:11-14). The question is meant to shake complacency: we are accountable for the truth we’ve been shown. Like the psalmist who declares, “Taste and see that the LORD is good” (Psalm 34:8), Isaiah expects the reader to lean on what is already known, not grope in uncertainty. Have you not heard? Truth has also been proclaimed audibly—through prophets, priests, and Scriptures read aloud in Israel’s gatherings (Deuteronomy 6:4-7; Nehemiah 8:1-8). “Faith comes by hearing, and hearing by the word of Christ” (Romans 10:17). The issue, then, is not whether God has spoken but whether His people have been listening attentively and believing what they’ve heard. The LORD is the everlasting God Here Isaiah names the covenant God—YHWH—who is eternal. Before the mountains were born, “from everlasting to everlasting You are God” (Psalm 90:2). He precedes time, outlasts time, and rules over time (Revelation 1:8). Because He is everlasting, His promises never expire (Numbers 23:19), and His covenant love remains steady even when human faithfulness falters (Lamentations 3:22-23). the Creator of the ends of the earth Isaiah anchors hope in the One who spoke galaxies into being (Genesis 1:1). From the remotest “ends of the earth” (Psalm 46:9) to the smallest detail of life (Matthew 10:29-31), nothing lies outside His jurisdiction. When Jeremiah marveled, “Ah, Lord GOD… nothing is too difficult for You” (Jeremiah 32:17), he echoed this same truth: the Maker of all can handle all. He will not grow tired or weary Unlike humans who reach the limits of endurance, God’s energy is inexhaustible. “Indeed, He who watches over Israel will neither slumber nor sleep” (Psalm 121:4). Elijah mocked powerless idols that “must be asleep” (1 Kings 18:27), but Israel’s God never dozes. Therefore His people can rest, knowing the world is not upheld by their strength but by His (Colossians 1:17). His understanding is beyond searching out God’s wisdom is unfathomable (Job 36:26; Romans 11:33). He sees the end from the beginning (Isaiah 46:10) and threads every detail into His sovereign plan. When life looks tangled, remembering His limitless insight breeds humility and peace: “Great is our Lord and mighty in power; His understanding has no limit” (Psalm 147:5). summary Isaiah 40:28 pulls discouraged hearts back to the bedrock truths they already know and have heard: the LORD is the eternal, all-powerful, all-wise Creator. He never tires, never relinquishes control, and never miscalculates. Confidence and endurance flow from fixing our eyes on Him rather than our circumstances, trusting the timeless God who sustains everything by His unstoppable power and perfect wisdom. |
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