The Christian’s Walk
17So I say this, and affirm in the Lord, that you are to no longer walk just as the Gentiles also walk, in the futility of their minds, 18being darkened in their understanding, excluded from the life of God because of the ignorance that is in them, because of the hardness of their heart; 19and they, having become callous, have given themselves up to indecent behavior for the practice of every kind of impurity with greediness.
17This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind, 18Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart: 19Who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness.
The greatest hindrance to belief in the gospel does not arise from human intellect, but from the heart that has been darkened by sin. In this sermon on Ephesians 4:17–19 titled “Darkness and Light,” Dr. Martyn Lloyd-Jones highlights the warning of Christ that all people in their natural state are alienated from God and unable to pursue what is good and right. This is because the effects of the fall extend to every aspect of humanity. It corrupts the mind, hardens the heart, and distorts the will. Despite this fallen state, humanity still places great worth and confidence in their ability to reason and know morality. This is evident in the many great philosophers of the ancient world who after all their learning and knowledge were still never able to come to true knowledge of God. As Dr. Lloyd-Jones teaches, this shows that what people need is not simply more knowledge, but a new heart and mind that is freed from the mastery of sin and its domination. However, freedom from sin comes only through the gospel of grace and the sovereign working of the Holy Spirit. This is why it is so important to pray that God would work in the hearts and minds of others to reveal Himself to them and give them a true understanding of the gospel of Jesus Christ.
Dr. Martyn Lloyd-Jones
Dr. Martyn Lloyd-Jones (1899-1981) was a Welsh evangelical minister who preached and taught in the Reformed tradition. His principal ministry was at Westminster Chapel, in central London, from 1939-1968, where he delivered multi-year expositions on books of the bible such as Romans, Ephesians and the Gospel of John. In addition to the MLJ Trust’s collection of 1,600 of these sermons in audio format, most of these great sermon series are available in book form (including a 14 volume collection of the Romans sermons), as are other series such as "Spiritual Depression", "Studies in the Sermon on the Mount" and "Great Biblical Doctrines". He is considered by many evangelical leaders today to be an authority on biblical truth and the sufficiency of Scripture.