Why will there be a "new earth?"

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Catholic Answers Senior Apologist Jimmy Akin explains what Rev 21:1 means when it says there will be "a new heaven and a new earth."

Jimmy Akin was born in Texas and grew up nominally Protestant. At age 20 he experienced a profound conversion to Christ. Planning on becoming a Protestant pastor or seminary professor, Jimmy started an intensive study of the Bible, but the more he immersed himself in Scripture, the more he found...