Which prophet voiced the message during the rebuilding period after the Babylonian exile?

The correct choice is Haggai because he played a significant role during the period of reconstruction following the Babylonian exile. His prophetic ministry occurred around 520 B.C., a time when the Jewish people had returned to Jerusalem and were in the process of rebuilding the Temple. Haggai's messages encouraged the people to resume this important work, emphasizing the significance of the Temple as a central place of worship and a symbol of God's presence among His people.

Haggai's straightforward approach and emphasis on action were crucial for motivating the community that had become discouraged and apathetic due to external pressures and their own challenges. He conveyed the importance of prioritizing the rebuilding of the Temple to restore their relationship with God and receive His blessings.

In contrast, the other prophets mentioned had different focus areas or contexts. Malachi, for example, delivered his messages much later, addressing issues of moral and spiritual decline. Zephaniah's prophecies were aimed at warning Judah prior to the exile, and Isaiah's ministry took place before the Babylonian invasion and focused largely on both the impending judgment and the eventual hope for restoration in the future.