Columbia subject headings:
Bible. Epistles of Paul--Criticism, interpretation, etc.
Love--Biblical teaching.
Love--Religious aspects--Christianity.
Harvard subject headings:
Bible. Epistles of Paul--Criticism, interpretation, etc.
Bible. Epistles of Paul--Ethics.
Love--Religious aspects--Christianity
Paul, the Apostle, Saint--Ethics.
Paul, the Apostle, Saint--Views on love.
Princeton subject headings: