2 John 1:5

And now I beseech thee, lady
Or "Kyria", which word the Syriac and Arabic versions retain, as if it was a proper name: the apostle having finished the inscription, salutation, and congratulation in the preceding verses, passes to an exhortation and entreaty to observe the commandment of love to one another, which is not a new commandment, but what was from the beginning:

not as though I wrote a new commandment (See Gill on 1 John 2:7) and (See Gill on 1 John 2:8).