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how do later biblical texts, like proverbs or new testament teachings, expand on or reinterpret the ethics of lending?

Adds the setting and its conversation across both testaments.

Deuteronomy 23:19-20

“You shall not lend on interest to your brother: interest of money, interest of food, interest of anything that is lent on interest. You may lend on interest to a foreigner; but to your brother you shall not lend on interest, that Yahweh your God may bless you in all that you put your hand to, in the land into which you are going to possess it.”

This passage is part of the Deuteronomic law code, presented as Moses' final instructions to the Israelites before they enter the promised land. It outlines regulations for community life, aiming to establish a just and distinct society under Yahweh's covenant.

What does a distinction between community members and outsiders mean for our modern understanding of ethical financial practice?

Then — the setting

This law emerged in a pre-industrial agrarian society where loans were often for subsistence, not investment. Interest (Hebrew: neshekh, meaning 'bite') could trap the poor in perpetual debt, leading to economic and social collapse within the community. The distinction between 'brother' and 'foreigner' reflects the covenantal understanding that Israelites were bound by a shared identity and mutual responsibility, different from their dealings with those outside the covenant.

Across the Testaments

The Old Testament, particularly the Pentateuch and Wisdom literature, consistently condemns charging interest to fellow Israelites, viewing it as exploitative and contrary to the covenantal ideal of mutual support (e.g., Exodus 22:25, Leviticus 25:35-37, Nehemiah 5:1-11). Prophets also denounce those who exploit the poor through usury. The New Testament largely extends and intensifies the ethical demands, moving beyond the in-group distinction. Jesus' teaching in Luke 6:34-35 to 'lend, expecting nothing back' pushes towards radical generosity and compassion, challenging the distinction found in Deuteronomy. Later Christian reflection often interpreted this as a call to universal charity, though historically, Christian communities have navigated the ethics of lending with varying degrees of success, sometimes leading to prohibitions on all interest (usury) and sometimes to nuanced allowances for productive loans.

Keep thinking

Read alongside it

Exodus 22:25
Another early law prohibiting interest on loans to the poor within Israel.
Psalm 15:5
Describes a righteous person as one who does not lend money at interest.
Luke 6:34-35
Jesus' teaching to 'lend, expecting nothing back,' expanding the scope of generosity beyond the in-group.

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