St. Paul is very clear in I Timothy 5.8: "But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel." Luther is pretty stern in thesis 46 in pointing out the consequences of this: those who are our own come before any purchase of pardons.
And never imagine that this problem has ceased: this also applies to the hucksters of our time who prey on the faithful to get their money.
"46. Christians are to be taught that unless they have more than they need, they are bound to keep back what is necessary for their own families, and by no means to squander it on pardons."