يوحنا الثانية ١:١٣

ALFORD confesses that the non-mention of the "lady" herself here seems rather to favor the hypothesis that a Church is meant. Next: 3 John Introduction

The apostle here salutes an honourable matron and her children (Jo2 1:1-3). Recommends to them faith and love (Jo2 1:5, Jo2 1:6). Warns them of deceivers (Jo2 1:7), and to take heed to themselves (Jo2 1:8). Teaches how to treat those who bring not the doctrine of Christ (Jo2 1:10, Jo2 1:11). And, referring other things to personal discourse, concludes the epistle (Jo2 1:12, Jo2 1:13).

1:13 from the children of your sister: This probably refers to the sister church in Ephesus and its members, with whom John was staying (see 1:1). John lived in that region and cared for several churches.