Now Israel loved Joseph more than any other of his sons, because he was the son of his old age. And he made him a robe of many colors. (Gen 37:3)

The “coat of many colors,” no matter how you translate it, set Joseph apart from his brothers as the favorite son. And of course, it set up an ugly sibling rivalry that would end in Joseph being sold as a slave in Egypt, thereby accomplishing God’s mysterious plan of salvation.