A.T. Robertson Commentary John 15:12

"This is my commandment, that ye love one another, even as I have loved you." — John 15:12 (ASV)

That ye love one another (ινα αγαπατε αλληλους). Non-final use of ινα, introducing a subject clause in apposition with εντολη (commandment) and the present active subjunctive of αγαπαω, "that ye keep on loving one another." See 13:34.