Final answer:
Jesus used the phrase 'brother, sister, and mother' to emphasize the importance of spiritual connections.
Step-by-step explanation:
The phrase 'multitudes Jesus brother, sister and mother' refers to a statement made by Jesus in the Bible. In Mark 3:31-35, Jesus is told that his mother and brothers are outside waiting for him. He then responds by saying, 'Whoever does the will of God is my brother and sister and mother.' This statement emphasizes the importance of spiritual connections and following God's will over biological relationships. It suggests that those who are committed to God and his teachings are considered part of Jesus' family.