1 Corinthians 16:1-4

Now concerning the collection for the saints: you should follow the directions I gave to the churches of Galatia. On the first day of every week, each of you is to put aside and save whatever extra you earn, so that collections need not be taken when I come. And when I arrive, I will send any whom you approve with letters to take your gift to Jerusalem. If it seems advisable that I should go also, they will accompany me.