To say “this person is poor (or suffering or in other financial hardship) because of their own sin and therefore should not be helped” is to utterly misunderstand the love of God.
Jonathan Edwards nails this:
If they are come to want by a vicious idleness and prodigality [wastefulness]; yet we are not thereby excused from all obligation to relieve them, unless they continue in those vices.
If they continue not in those vices, the rules of the gospel direct us to forgive them; and if their fault be forgiven, then it will not remain to be a bar in the way of our charitably relieving them.
If we do otherwise, we shall act in a manner very contrary to the rule of loving one another as Christ hath loved us. Now Christ hath loved us, pitied us, and greatly laid out himself to relieve us from that want and misery which we brought on ourselves by our own folly and wickedness. We foolishly and perversely threw away those riches with which we were provided, upon which we might have lived and been happy to all eternity.
From his sermon, “The Duty of Charity to the Poor Explained and Enforced,” which can be found in the Banner of Truth edition of The Works of Jonathan Edwards, volume 2, page 172 (right column, half way down).