Amos, possibly the first of the writing prophets, was a shepherd and farmer called to prophesy during the reigns of Uzziah (792-740 b.c.) in the southern kingdom and Jeroboam II (793-753) in the north. During this time both kingdoms enjoyed political stability, which in turn brought prosperity. It was also a time of idolatry, extravagance, and corruption. The rich and powerful were oppressing the poor. Amos denounced the people of Israel for their apostasy and social injustice and warned them that disaster would fall upon them for breaking the covenant. He urged them to leave the hypocrisy of their "solemn assemblies" (5:21) and instead to "let justice roll down like waters" (v. 24). Nevertheless, said Amos, God would remember his covenant with Israel and would restore a faithful remnant.