Zephaniah prophesied about the Day of the Lord. He focused entirely on the final days when Jesus returns and God judges the world. He described an event that would affect every man and beast in the world. This judgment will be a result of the sin of the nations, Zephaniah urged repentance and faithfulness. God will always preserve and care for those who are faithful to Him. In the end, every person on earth will acknowledge the Lord as God.