Both

Christians are commanded to help meet both the spiritual and physical needs of others--starting with fellow believers. It's true that you can't meet spiritual needs with physical stuff, but you can't meet physical needs with spiritual "stuff" either.

Any work that is involved in meeting the spiritual needs of the people--evangelizing and discipleship--but is not involved in meeting the physical needs of the people is not doing God's work. Any work that is involved in meeting the physical needs of the people, but is not involved in meeting their spiritual needs--evangelizing and discipleship--is not doing God's work.

"What shall it profit a man if he gain the whole world and forfeit his own soul?"