The sermon by Pastor Chris emphasizes the importance of trusting God with integrity from the book of Acts in a series called "Value-Sized." He highlights that the church is a movement of people and stresses that believers become unstoppable in doing God's will by walking in the spirit. The biblical reference in Acts 5 about Ananias and Sapphira serves as a cautionary tale on the dangers of lacking integrity and choosing popularity over trust in God. As the sermon delves into the definition of integrity, it underlines the significance of trusting God entirely, exclusively, and exponentially, entrusting every area of life to Him and growing in reliance on His wisdom and guidance. The congregation is challenged to assess where they can surrender to God and trust Him more, with practical steps like tithing, seeking godly counsel, and reflecting on God's faithfulness in their lives.