3 John 1:5

5 Dear friend, you are faithful in what you are doing for the brothers and sisters,a even though they are strangers to you.

Read 3 John 1:5 Using Other Translations

Beloved, thou doest faithfully whatsoever thou doest to the brethren, and to strangers;
Beloved, it is a faithful thing you do in all your efforts for these brothers, strangers as they are,
Dear friend, you are being faithful to God when you care for the traveling teachers who pass through, even though they are strangers to you.