Then I, John saw a new heaven and a new earth. The former heaven and the former earth had passed away, and the sea was no more.
Revelation 21:1
In the book of Revelation, God reveals to John what will happen at the end of time. John sees that God will establish a new heaven or skies and a new earth. The former heaven and the former earth are gone. They will pass away. They will not be destroyed but will be superseded by something better.
John also notes that there will be no more sea. In the book of Revelation, the sea stands as a metaphor of what separates a holy God from sinful humanity. In saying that the sea is no more, John means that God and his people will no longer be separated. They will be connected in relationship.
Thank God today that he is removing every obstacle between you and him. Thank God that, in the brand-new heaven and earth, nothing will separate you from God.