Haggai delivered a prophetic message to the despondent, dispirited, and distracted people, temporarily reviving their hopes. But discouragement set in less than a month after the returned exiles had been motivated and mobilized to embark on a Temple rebuilding project. Haggai was called again to deliver the "word of the Lord," this time with powerful words of encouragement.
God has projects for us, too, and by relying on His strength and the "power of his might," we can have inner assurance that He is with us as we move ahead.