Why should there be an advantage to being poor?

Presumably you might want to give the poor a systemic advantage over the rich in order to balance the system and make it more democratic. Otherwise the rich will have more influence.

God created all humans equal in His image. Therefore when humans impose disadvantages on other humans just because they are poor, they go against God.

...because if there isn't then your democracy will turn into an oligarchy. The advantage needs to be somewhat against the richest and for the poorest if you're going to protect that.