A revolutionary idea lies at the heart of the relationship between humanity and the Creator when it comes to charity. Helping a person in need is not merely a social act; it creates a dynamic where a human being seemingly places God in His debt.
The primary approach among commentators is that anyone who freely gives to the poor is considered to have given a loan to God. Since it is God's responsibility to sustain all living creatures, a person who supports the destitute is essentially stepping in to fulfill the Creator's role [רלב״ג, ביאור שטיינזלץ]. God intentionally created poverty, rather than sustaining everyone directly, specifically to grant the wealthy the opportunity to perform the commandment of charity [אלשיך]. Out of profound humility, God elevates the human being to the status of a creditor [חומת אנך]. Consequently, the giver is assured that his money is never lost. Instead, it serves as a secure investment that will return to him with profit [עמנואל הרומי].
Alternatively, a contrasting perspective views God as the creditor. According to this line of thought, human wealth does not truly belong to the individual. Rather, it is a deposit and a loan granted by God with the explicit purpose that the person will use it to show grace to the poor [אבן עזרא, מלבי״ם, עמנואל הרומי].
When it comes to how God settles this debt, there are multiple layers of repayment. God does not merely return the original amount. He adds a reward for the pure kindness extended to a poor person who has no means to repay. This addition is not considered forbidden interest, but rather a rightful compensation for selfless giving [אלשיך, מצודת דוד]. Furthermore, this repayment is not a cold, technical transaction. It is an expression of God's deep love and affection for the giver [מלבי״ם]. The reward also operates on a principle of measure for measure. Just as the giver sustained the soul of the impoverished person and saved him from dying of hunger, God will remember this righteousness. If the giver ever falls ill and faces death, God will restore his soul and spare his life [רש״י, אבן עזרא]. Additionally, God brings blessing to the giver's business endeavors, ensuring he has the means to continue bringing joy to the poor [רלב״ג].
Another perspective shifts the focus of the repayment entirely onto the poor individual rather than the giver. In this view, the funds provided are actually the kindness that God already intended to bestow upon the needy. The person giving the charity is simply acting as a faithful messenger chosen by God to deliver His goodness [עמנואל הרומי].
On a more philosophical level, poverty can be seen as a symbol for the human intellect. A person who shows grace to his own mind by nourishing it with spiritual understanding brings his human potential into reality. By fulfilling the very purpose of creation in this way, he earns a fitting reward from God [עמנואל הרומי].