This sermon centers on the enduring call to thanksgiving found in Psalm 136:1—'O give thanks unto the Lord, for he is good, for his mercy endureth forever'—presenting God as the sovereign, eternally good, and merciful Creator and Redeemer. It unfolds threefold: first, identifying God through His divine names—Yahweh (the self-existent I Am), Elohim (the Almighty Creator), and Adonai (the Lord of Lords)—to emphasize His supreme nature; second, grounding thanksgiving in God's essential goodness and everlasting mercy, which are not merely attributes but active, sustaining realities in creation, redemption, and the Christian journey; and third, tracing these attributes through the psalm's narrative—celebrating God's wisdom in nature, His faithfulness in delivering Israel from Egypt and through the Red Sea as a type of salvation in Christ, and His steadfast guidance through life's wilderness, even amid trials and doubt. The message is both pastoral and profoundly hopeful, urging believers to trust in God's unchanging character and to give thanks not only for blessings but for His enduring presence and provision in every season of life.