The sermon emphasizes the foundational importance of Jesus Christ in the church and individual believers' lives, cautioning against division and reliance on personalities or styles of ministry. Drawing from 1 Corinthians 3, it highlights that ministers are servants of God, tasked with proclaiming the gospel and rightly dividing the word, not seeking personal fame or influence. Ultimately, the message underscores that true faith rests solely on Christ, the tested and precious cornerstone, and warns that those who build upon anything else will face judgment, urging listeners to examine their lives and ensure their foundation is secure in the Lord.