‘I am speaking in human terms, because of your natural limitations. For just as you once presented your members as slaves to impurity and to lawlessness leading to more lawlessness, so now present your members as slaves to righteousness leading to sanctification... But now that you have been set free from sin and have become slaves of God, the fruit you get leads to sanctification and its end, eternal life’ (Rom. 6:19,22).

You can find other materials such as sermons, books, audio books, and articles at David H J Gay website:
http://www.sermonaudio.com/source_detail.asp?sourceid=davidhjgay

And on Amazon and Kindle you will find more books:
http://www.amazon.co.uk/David-H.-J.-Gay/e/B00491BI2U
http://www.amazon.com/David-H.-J.-Gay/e/B00491BI2U

THE WRITINGS OF DAVID H.J. GAY
http://christmycovenant.com/?s=david+hj+gay&x=9&y=8