How did the average lenders justify that they had to collect interest on loans?

Explain the THREE reasons that were raised both then and now to justify the collection of interest in Loans, bonds and other instruments

Cmo justificaban los prestamistas de la Edad Media que tenan que cobrar intereses por los prstamos? Explica las TRES razones que se planteaban tanto entonces como ahora para justificar el cobro de intereses en prstamos, bonos y otros instrumentos " T. % 7 7