What does the Bible say about love being a debt?

Romans 13:8 teaches that we owe no man anything except to love one another. This debt of love is unique in that it is perpetual; we are called to love all men—believers and unbelievers alike—and it is a debt we will never completely settle. The essence of this teaching is rooted in the understanding that love fulfills the law, as described in Romans 13:10, which asserts that love does no harm to its neighbor. Therefore, love stands as the driving principle behind our interactions with others, rooted in a spirit of sacrificial giving.