““What do you mean by crushing my people, by grinding the face of the poor?”” “declares the Lord GOD of hosts” (v15). Isaiah prophesied that God was going to judge the behavior of wealthy and idolatrous Israelites, because their homes were filled with riches produced by oppressing the poor (v14). Israel’s guides had misled everyone (v12), taking them down a path of greed and disrespecting God’s glorious presence (v8). Therefore, the Lord was taking away “supply and support,” leaving ignorance and chaos to rule (v1-5).
As Isaiah reminded the Israelites, our identity as God’s people is not a matter of sacrifices and traditions, but of “speech and deeds” that honor His name (v8).