In Bible times, people benefited from having binding contracts in business and employment. Today, the same holds true.
فَأَجَابَ ٱلشَّعْبُ بِأَجْمَعِهِمْ :‏ « كُلُّ مَا تَكَلَّمَ بِهِ يَهْوَهُ نَفْعَلُهُ » .‏