Galatians 4. The Apostle Paul told the Galatians they are children of God and heirs of the promise, but still, he feared for the Church since they preferred the law over the promise. He explained it through two covenants, one in bondage through the law, the other in freedom through the Spirit.
Isaiah 37. Jerusalem’s deliverance is foretold, Hezekiah’s prayer and the word of the LORD concerning Sennacherib is recorded, followed by Hezekiah’s final fall.
Isaiah 38 describes Hezekiah’s illness and how the LORD added 15 years to his life.