I Corinthians 15:58-16:3 (17th and 19th Saturday after Pentecost)
Therefore, my beloved brethren, be steadfast, immovable, always
abounding in the work of the Lord, knowing that in the Lord your labor
is not in vain.
Now
concerning the contribution for the saints: as I directed the churches
of Galatia, so you also are to do.
On the first day of every week, each of you is to put something
aside and store it up, as he may prosper, so that contributions need not
be made when I come.
And when I arrive, I will send those whom you accredit by letter to
carry your gift to Jerusalem.