F.B. Meyer emphasizes the importance of self-judgment and the need for divine guidance in forming opinions about others, warning against the dangers of critical and unfounded judgments. He encourages believers to seek God's insight into their own hearts before judging others, highlighting the necessity of prayer and the pursuit of truth. Meyer also reminds us of the power of asking God for good gifts, particularly the Holy Spirit, and urges the adoption of the Golden Rule as a guiding principle in our interactions with others.