Dr. Sproul goes through great lengths to describe baptism as a sign or seal to the New Testament covenant. As Circumcision was a sign or seal to the Old Testament covenant, Baptism is a sign or seal to the New Testament covenant. The author does a fair job describing the counter argument to believers Baptism. Dr. Sproul argues that Baptism is assign of coming to the Family of God; actual belief is a realization of this fact. I disagree; I believe that a person needs an actual knowledge and belief to be identified with God's Kingdom. The author goes through great lengths in describing the difference between a sign and symbol. A sign points to the actual fact whereas a symbol represents the actual thing. Symbolism is not to be confused with mere symbolism or activity that does not reflect the actual glory of God and His great acts.
Dr. Sproul goes to great length to identify worship with the God described in the Bible. If one accepts the idea the Bible is God's word then what the Bible teaches about worship should be prescribed in God's Church. TH e words of the Bible should take precedence over personal taste, enjoyment or fulfillment. Worship is not about oneself. This should not be confused that worship should only touch the cerebral. Yes worship service should provoke thought, understanding about whom God is and the works of God. Pure knowledge of these things should provoke an emotional response. That does not mean that the form, the organization of the service, worship surroundings, and actual activity of the service cannot form additional emotion about God and His great deeds. R.C. Sproul argues the Old Testament worship as prescribed about the Old Testament did this and some of it can be used enlighten us about worship in the New Testament Church. Yes the New Testament looks at the perfected sacrifice of Jesus. No current repetitive sacrifice need occur.
The author does an excellent job of describing why the Lord's Supper in representation and the actual Spirit of Christ in the Lord's Supper should a very emotional experience in reverence to what God has provided so one need not pay the consequence of their sin. Not be confused with a physical actual corporal body being involved. R.C. Sproul also argues baptism as identification to Jesus and the New Testament Covenant.