The Gospel of Luke is commonly referred to as social because it retains the negative attitude to wealth that characterizes early Christian communities, mercy for the oppressed and sinners. The author of the Gospel of Luke tries to connect the story of Jesus' life with real events, yet this book is not biographical, but faithful, like all other gospels. The author mentions the sources he uses, but without sufficient accuracy. However, the connection with the Gospel of Mark and the lost document containing the sermons of Jesus is evident. The Gospel was probably written in Antioch around 80. The first references to the Gospel of John appear in the second half of the second century. Of particular note is Irinaeus' work Against Heresies, written in 180-185, where the author states that the last evangelist was John, who created the gospel in Ephesus. The earliest time of writing of the Gospel dates back to the very end of the first century, but not later than the second half of the second century, then some fragments of this work are taken from some other common for the Gospels original source.