If my parents had loved my brother or sister more than they loved me, I would have felt hurt. If my friend likes me the most among all his friends, I would feel extra good. With God's love, no such feelings arise because he loves every single one of us equally and his pure love transforms our heart. That's why we are able to spread his love and share his joy with others with total absence of the ego. I cannot conceive of anything abstract that can be more beautiful than God's love as revealed to us through Jesus the Christ.