Seeds that blossomed into the Protestant Reformation of the 16th century – the various factors in the late medieval world that made the Reformation possible and pointed the way towards it – movements of thought and outstanding personalities.

Towards the end of Christ's most famous speech He uttered these striking words: ‘Beware of false prophets, which come to you in sheep’s clothing, but inwardly they are ravening wolves’.

My personal experience with Chris­tian apologetics began in February 1943, when I was a student at Princeton University. It had not been my privilege to be raised in a Christian home nor to attend a Bible-teaching church. But God, in His grace, used a couple of Christian students at the university to invite me time and time again to attend a weekly Bible class being taught by a Princeton a...