Jaroslav Pelikan said this quote
“ One example is the familiar parable of the prodigal son (Luke 15:11-32), which in some ways might be better called the parable of the elder brother. For the point of the parable as a whole - a point frequently overlooked by Christian interpreters, in their eagerness to stress the uniqueness and particularity of the church as the prodigal younger son who has been restored to the father's favor - is in the closing words of the father to the elder brother, who stands for the people of Israel: 'Son, you are always with me, and all that is mine is yours. It was fitting to make merry and be glad, for this your brother was dead, and is alive; he was lost, and is found.' The historic covenant between God and Israel was permanent, and it was into this covenant that other peoples too, were now being introduced. This parable of Jesus affirmed both the tradition of God's continuing relation with Israel and the innovation of God's new relation with the church - a twofold covenant. ”