Columbia subject headings:
Bible. Epistle of John, 1st--Commentaries.
Bible. Epistle of John, 1st--Criticism, interpretation, etc.
Bible. Epistle of John, 1st--Theology.
Harvard subject headings:
Bible. Epistle of John, 1st--Commentaries.
Bible. Epistle of John, 1st--Criticism, interpretation, etc.
Bible. Epistle of John, 1st--Theology.
Princeton subject headings: