Phil Beach Jr. emphasizes the dangers of wrongful judgment and the importance of forgiveness in his sermon. He draws from 1 Samuel 16, illustrating how God sees the heart while humans often judge by outward appearances. Beach encourages the congregation to seek God's guidance in their judgments and to be aware of their own faults before criticizing others. He highlights that true judgment should be redemptive and free from bitterness, urging believers to refrain from speaking evil of one another. The sermon concludes with a call to ask God for clarity and purity in judgment, aligning with the teachings of Jesus.