In this verse, God speaks through the prophet Zechariah, urging the people to be strong and continue their work on rebuilding the temple. This encouragement comes at a time when the Israelites are returning from exile and are tasked with restoring their place of worship. The call to "let your hands be strong" is both a literal and metaphorical encouragement, urging them to physically and spiritually commit to the task at hand.
The reference to the prophets who spoke when the foundation was laid serves as a reminder of God's ongoing promises and the continuity of His plans. It reassures the people that their efforts are not in vain but are part of a larger divine narrative. This verse highlights the importance of perseverance, faith, and community in achieving goals that align with God's will. It encourages believers to trust in God's promises and to be active participants in His work, knowing that their labor contributes to the fulfillment of His purposes.