Jack Hay was brought up in Ayrshire, Scotland, and was saved as a boy, baptized at fourteen and received into fellowship of the assembly at Prestwick. He resigned from his employment in banking in 1972 to serve the Lord in a full time capacity at which time he moved 100 miles north to Perthshire. Over the years he has been involved in work with children, gospel preaching and teaching the word of God. His labours have taken him to foreign parts, particularly to places where there is a need for the simple teaching of the scripture. He takes an interest in a few places where simple teaching is needed. His writings have been mainly in the form of magazine articles, booklets, and tracts, like Safe, Sure and Happy. He has contributed to the Old Testament series of the ‘What The Bible Teaches’ commentaries published by John Ritchie Ltd.