–3 titled "Seeking Certainty," Dr. Martyn Lloyd-Jones proclaims that Christians can know this by trusting in God's revelation of Jesus Christ. A Christian that is maturing in their faith is one who rests on what Christ has done for them. This mature faith produces assurance that is not simply a passing emotion that comes and goes, but it is an abiding and true experience knowing they belong to God. That belonging is proven in a life of humble obedience. However, Dr. Lloyd-Jones also warns against those who teach an assurance of bare intellectual assent. They say that to simply claim that one believes in Christ and His gospel is all that is needed of assurance. This is shown to be inadequate from the many scriptural passages that show the deep and loving trust that the saints of God can have in the gospel. This is an intimate and personal knowledge that God loves them and has sent his Son to die a cruel death on the cross so that they could be saved. This is certainly intellectual assent to the gospel, but it is more. It is the product of the Holy Spirit working in their lives so that they trust God and His promises in true faith. This should be an experience that all Christians seek and obtain.