The temple was never designed to bring life. It was God in the temple that brings life. But now it's Jesus, God made flesh, that will be the glory of Israel, a light to the Gentiles, the Messiah who brings life.
Take down the mountains. Lift up the plains. Smooth out the rough spots. Make it easy for God's arrival because God is bringing good news, his Kingdom. His rule and reign will set everything straight. It will make all things new again. God will restore that which has been lost. His gentleness will restore their souls.
God has made a promise. You don’t have to live in exile. You can live in the covenant of love that never ends. God is inviting us to more.
Even in displacement and exile, our role as people of God is to be light in the wastelands. That is resurrection power.
But Isaiah prophesies. A child will be born. A Wonderful Counselor, a Mighty King, an Everlasting Father. The Prince of Peace himself. When he comes, darkness will flee. Clothing and weapons used for war will be repurposed to bring life instead.