Deuteronomy 15:2 "Every creditor that lends anything to his neighbor shall release it"

When we loan money to someone we expect to be paid back.

However, the Torah tells us that when Shemitah comes along we must forgive the loan that was made. Rather, we should trust that HaShem will "repay" us.

When the Shemitah year arrives, we are commanded not to demand our loans back. They are considered forgiven and must no longer be repaid.