What does the Bible say about preaching the gospel in the last days?

The book of Revelation teaches that the preaching of the gospel is central to God's purpose throughout all human history. It confirms that the message of God's free and sovereign grace, which has been preserved since the fall of Adam, will continue to be declared until the Lord's return. Throughout every generation, God's servants have been tasked with the responsibility to preach the same unchanging gospel that glorifies Christ. In Revelation 10, we see that this preaching offers sweet comfort to God's suffering saints, ensuring that His purpose is fulfilled without delay, as the message is sustained and supported by divine truth.