In Lk 6:12-16, Jesus spent a full night in prayer and then called twelve men from among his disciples, whom he called ‘apostles’, the sent ones. Luke will use the title apostle only for those twelve chosen ones. Together with the other disciples they are the ones who hear the Great Sermon of Jesus on the Plain (Lk 6:17:7:1) which we start reading today. In his teaching Jesus shows where true happiness lies and warns that those who are trying to be sons and daughters of God often miss it. The standards of the world are not those of God. Jesus’ way of looking at life turns upside down our usual ideas and values.