John Gill

Then the disciples,.... That were at Antioch, every man according to his ability; whether rich or poor, master or servant, everyone according to the substance he was possessed of; whether more or less, which was a good rule to go by: determined to send relief to the brethren which dwelt in Judea; either because that Agabus might have suggested, that the famine would be the severest in those parts; or because that the Christians there had parted with their substance already, in the support of one another, and for the spread of the Gospel in other parts; and therefore the Christians at Antioch, in gratitude to them for having received the Gospel, and Gospel ministers from them, resolved to help them with their temporal things, when in distress.