'Heaven and Earth' in the Bible

For it is true when I say, not one little letter or even a portion of a letter will be removed from the law of Moses until everything is accomplished [that is required by them]. [When that happens, then] heaven and earth will pass away [i.e., be destroyed. See II Peter 3:12].

About that time Jesus said [in prayer], "I thank you, O Father, Lord of heaven and earth, that you have hidden these things [i.e., the significance of Jesus' words and works] from those who [thought they] were wise and intelligent and have [instead] revealed them to people who are child-like.