You will remember that in the Bible we have Four Gospels; that is, four different accounts of our Lord's sayings and doings whilst on earth, and of the Gospel which He came to teach. The first of these was written by Matthew, about five years after the death of Jesus Christ. The Gospels "according to St. Mark and St. Luke," were written about twenty-seven years later: St. Luke was a disciple of Christ's before His crucifixion, and St. Mark was probably one also, but neither of them was an Apostle. As the Gospel of St. Matthew gives an account of the birth of Jesus Christ, St. Mark's says nothing on the subject, but begins with the public appearance of John the Baptist; whilst, on the contrary, that of St. Luke gives many particulars omitted by St. Matthew. St. John, who lived to be 100 years old, did not write his Gospel until sixty-four years after the death of Christ: he seems to have written it, in order to tell us many things not mentioned in the former Gospels, particularly the conversations and discourses of our Lord: and he repeats very little of what is recorded by the other Evangelists, as we call those who wrote the Gospels. Out of the four Evangelists, two were Apostles also, and two were not. St. Luke has also left us another very valuable record, of the acts done by the Apostles after our Saviour's death: this is the only history of all that the Apostles did and said, and it is called "The Book of the Acts of the Apostles." Before St. John wrote his Gospel, he wrote what is called "The Book of the Revelation of St. John," being an account of visions vouchsafed him, and prophecies made known to him, whilst in banishment in the isle of Patmos, on account of his religion. St. John also wrote three of the Epistles, or Letters, which form part of the New Testament. Peter wrote two Epistles, James and Jude, or Judas Thaddæus, each one: but the greater number of the Epistles were written by St. Paul, who did not become a disciple or follower of Jesus until after the crucifixion. The Jewish Rabbis preferred to take as their pupils and disciples, rich and learned men; but, as we have seen, Jesus chose poor and ignorant men, to show that learning was not necessary to enable men to understand the Gospel; for that its truths are so plain, that even the most ignorant person, who in his heart loves God, can understand the Gospel, and learn how to please God. Multitudes of the people continued to come to Christ, to hear him, and to be healed of their diseases: he healed them all, and also tried to show them how they ought to behave, in order to obtain the blessing of God. Seeing the multitudes, he went up into a mountain, and there spake all the words which we call the "Sermon on the Mount": an account of this Sermon is given to us both by St. Matthew and St. Luke. All Christians should study it, and try to obey it: even children can understand a good deal of it, if they will try.