Christian ethics, also known as moral theology, is a multi-faceted ethical system: it is a virtue ethic which focuses on building moral character, and a deontological ethic (divine command theory) which assesses choices. It also incorporates natural law ethics, which is built on the belief that it is the very nature of humans – created in the image of God and capable of morality, cooperation, rationality, discernment and so on – that informs how life should be lived, and that awareness of sin does not require special revelation. Other aspects of Christian ethics, represented by movements such as the social Gospel and liberation theology, may be combined into a fourth area sometimes called prophetic ethics.