The phrase "divine command" means that something is considered right or wrong because a deity or god commands it to be so. It implies that moral or ethical rules come from a higher authority. Full definition
Yet it was assumed throughout Israel's history that the law of the covenant must be observed as divine command within the covenant brotherhood, and this had a radical influence on Israel's attitude toward the law. (religion-online.org)
God's nature would be expressed through divine commands which would flow necessarily from his moral nature. (religion.blogs.cnn.com)