“And he said unto him, Son, thou art ever with me, and all that I have is thine.”
King James Version (KJV)
15:31 Thou art ever with me, and all that I have is thine - This suggests a strong reason against murmuring at the indulgence shown to the greatest of sinners. As the father's receiving the younger son did not cause him to disinherit the elder; so God's receiving notorious sinners will be no loss to those who have always served him; neither will he raise these to a state of glory equal to that of those who have always served him, if they have, upon the whole, made a greater progress in inward as well as outward holiness.
Lu 15:31 Son. The father pleads with the envious brother and tries to bring him to a better frame of mind, as Christ pleads with Israel. All that I have is thine. "If a son, then an heir, and a joint heir with Christ" (Ro 8:17).