F.B. Meyer emphasizes the importance of maintaining the integrity of the Church by rejecting the world's attempts to join in its work without true submission to Christ. He warns against the subtle temptation of accepting help from those who do not share the same faith, as their intentions may ultimately hinder God's work. Meyer highlights the necessity of being vigilant against unequal yokes, urging believers to cleanse themselves from unrighteousness and to remain steadfast in their commitment to God. The sermon calls for discernment in partnerships, reminding us that true aid comes from those who are aligned with God's purposes.