Keith Simons teaches on Psalm 126, emphasizing the joy of God's deliverance as He restores His people from captivity. The psalm reflects the journey of pilgrims returning to Jerusalem, celebrating God's miraculous work in turning their sorrow into joy. Simons highlights the importance of recognizing God's hand in our lives, as the Israelites did when they proclaimed, 'The Lord hath done great things for us.' He encourages believers to pray for complete restoration and to trust in God's ability to bring life and abundance from desolation. The sermon concludes with a reminder that those who sow in tears will reap in joy, affirming God's promise of a bountiful harvest.