He starts off in Ch 12 by arguing for unity. All spiritual gifts are useful and important and are all given by God. There is no inherrent order. In ch 13 he argues that gifts are of no value at all if they are not used or expressed with love. In ch 14 he argues that gifts are given to build up the church not the individual.
All gifts are equally important and are essential for the unity of the church.
Gifts are useless if they are not expressed with love.