In Ch.4 the navi describes the many warnings and punishments that God has sent Israel - the line that repeats ולא שבתם עדי - you have not returned to me. Ch.5 gives us a dirge, a description of the day of the Lord and the lines which Martin Luther King would quote: "Let justice roll down like water, and righeousness like a mighty stream" Ilana Stein presents ch.5 and concludes with a reflection of how elephants in Africa have helped her understand the different translations of the verse ויגל כמים whether water wells up or rolls down - justice can appear buried, but with a change in actions, a society that appears to be dead can return to life. Text here: https://www.sefaria.org/Amos.5
