Greatest is Love, Studies in 1 Corinthians 13 by W Graham Scroggie and published by Ambassador Publications.
Love represented the chief fact and chief doctrine of Christianity. These preeminence and value of love, the prerogative and virtue of live and the permanence and victory of love are all treated.
Caiaphas shows that spiritual discernment is possible apart from love. Judas shows that much knowledge of divine things is possible apart from love; and James and John show that a certain kind of faith is possible apart from love. It is love alone that makes these gifts of any real value to the possessor. Love must be kind. You can no more have love without kindness than you can have springtime without flowers. The greatest thing a man can do for his Heavenly Father is to be kind to some of His other children.