The sermon explores the theme of divine strength prevailing over human weakness through the biblical account of King Abijah. It contrasts the vanity of earthly wealth and legacy with the enduring power of faith in God. The preacher highlights how Abijah, despite being outnumbered and outmatched by Jeroboam, relied on the gospel rather than military might. This narrative serves as an encouragement for believers to trust in spiritual resources when facing overwhelming odds. Ultimately, the message asserts that embracing the seemingly foolishness of the gospel is the true source of victory and salvation.