In Isaiah 33 and 34 Isaiah calls out to God for mercy. God is angry with the nations and will bring all of them low. If the people call out to God they will see God working. God will judge and will forgive those who put their trust in Him.
Those who have sinned against the Lord will be destroyed. Their kingdoms will fall.
Hebrews 2 tells how God is giving the coming world to humanity. Everything will be under our control. We do not see this now but we see this promise in Jesus who became human and is now crowned with glory. It is Jesus who makes our salvation perfect through suffering. It is Jesus who makes us holy (sanctifies us). Because we have been sanctified we are now called brothers and sisters of Christ with God as our Father. Because Jesus was tested he can help those who are tested.