Charles Finney addresses the members of the Presbytery of Troy, emphasizing the necessity of unity among believers as expressed in the scripture, 'Can two walk together except they be agreed?' He highlights that agreement in faith and purpose is essential for advancing the interests of the Redeemer's kingdom. Finney expresses his hope that the publication of his sermon will inspire and promote this unity among the church members. He acknowledges the spontaneous nature of his sermon and submits it for their consideration, praying for God's blessing on their efforts.