“Whether it be a friend or an enemy, a believer or an unbeliever, do good to the person in need.”
Theodore of Heraclea (d. c. 355) in Fragment 38, comment on Matthew 5:43, as cited in Ancient Christian Commentary on Scripture: Matthew 1-13, edited by Manlio Simonetti (Downers Grove: IVP, 2001) 120.
To be worldly is to selectively extend assistance to those we judge deserving. To be Christian is the opposite. Don’t be selective! That’s what the greatest commandment is all about (cf. Luke 10:25-37)!