Chris Evans, an English biblical scholar and theologian, argued that a recurring theme of the Bible, especially the Old Testament, is the concept of covenant. According to Evans, a covenant is a binding agreement between two parties, in which both parties make promises to each other and agree to abide by certain conditions. In the Old Testament, God makes a covenant with the Jewish people, promising to be their God and protect them if they obey his laws and worship him exclusively. The idea of covenant shapes the relationship between God and his people, and is a central concept in Jewish and Christian theology.