In the opening message of the "Spiritual Mutts" series, Pastor Cyle uses the analogy of dog breeds—purebreds, designer dogs, and mutts—to explore how Christians engage with denominational traditions. Drawing from his own diverse church background (Pentecostal, Nazarene, Baptist, non-denominational, and more), he argues that believers who draw strengths from multiple traditions develop "spiritual vigor"—the theological equivalent of a mutt's hybrid vigor. He highlights what each tradition contributes: Baptists' love for the Word, Pentecostals' expectation of the Spirit, Wesleyans' call to holiness, the Reformed emphasis on God's sovereignty, and liturgical traditions' historical continuity. But he also warns against "selective theology"—the tendency to keep the parts of Scripture we like and discard the parts that challenge us. Citing 1 Corinthians 1, 2 Timothy 4, 1 Thessalonians 5, and Acts 17, the message calls the church to test everything against Scripture, submit to the whole counsel of God, and resist the temptation to create a customized Christianity that suits our own passions. The sermon closes with a pastoral challenge to let God's Word shape our character, forsake sin, and live out an authentic faith in community.