1 Corinthians 16:1-9

Now concerning the money collected for [the relief of] the saints [in Jerusalem], you are to do the same as I directed the churches of Galatia to do. On the first day of every week each one of you is to put something aside, in proportion to his prosperity, and save it so that no collections [will need to] be made when I come. When I arrive, I will send whomever you approve with letters [of authorization] to take your gift [of charity and love] to Jerusalem; and if it is fitting for me to go too, they will accompany me. I will visit you after I go through Macedonia, for I am only passing through Macedonia; but it may be that I will stay with you [for a while], or even spend the winter, so that you may send me on my way to wherever I may go afterward. For I do not wish to see you right now just in passing, but I hope to remain with you for some time [later on], if the Lord permits. But I will stay in Ephesus until Pentecost, because a wide door for effective service has opened to me [in Ephesus, a very promising opportunity], and there are many adversaries. [Acts 19:23-41]