ISB ~ 2 Corinthians 8 v3

according to their means:Giving alms to the poor is prescribed as a work of mercy in the OT (Tob 12:8-9) as well as in the NT (Mt 6:2-4). Here Paul tries to stimulate a healthy rivalry, hoping that the generous example of the Macedonians will draw forth an even greater gift from the Corinthians.

• The standard Paul erects for almsgiving is the standard tradition adopts for offerings to the Church. This is stated in the fifth precept of the Church, which obliges us to give a part of our earnings to the Lord, each according to his means (CCC 2043).