The ripe grapes (see Amos 8:2) trampled in the winepress highlight God's power to judge (see Revelation 19:15; Joel 3:13).
People built winepresses outside cities and towns; here, the city is Jerusalem. The bloody river of death stretched about 290 kilometers (180 miles). This shows that God’s enemies have no chance when the Son of Man comes in judgment. This destruction is closely linked with the final battle in Revelation 19:17–21. God is just and fair in giving people exactly what they deserve (see Revelation 16:5–7).