Proverbs 22:22 Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
23 For the LORD will plead their cause, and spoil the soul of those that spoiled them.
We see here that God tells us not to oppress those that cannot help themselves. We are also not to judge them because they do not have the means to plead their case.If they were rich they could buy favor for themselves, but the warning here is not to judge to judge them harshly because they are poor. The next verse lets us know that the Lord plead their cause. God will always help those that cannot help themselves when they ask for it and rely on Him. For those that want to oppress the poor know that God will deal with them to.