Characteristics of the Present World That are Absent in the New Earth

Using similar phrasing– οὐκ ἔστιν/ἔσται ἔτι (ouk estin/estai eti)–John, in Revelation 21-22, indicates seven things that will be no more in the new Earth: 

The sea (Rev 21:1)

Death (Rev 21:4)

Mourning (Rev 21:4)

Crying (Rev 21:4)

Pain (Rev 21:4)

Any curse (Rev 22:3)

Night (Rev 21:25; 22:5)

The number seven seems significant, indicating the complete passing away of every negative or difficult aspect of the old creation.

Death, mourning, crying, pain, and "any curse" are all effects of sin, and we rejoice that these will be absent from the new Earth. The absence of the sea and night may be more surprising, since–as recorded in Genesis 1–God made these as part of His "very good" creation. We should recognize that the sea and night are seen as symbolic of separation, fear, and death. In John's vision, the removal of these physical features indicates that there will be absolutely no lack of security. The lack of sea and the lack of night in Revelation indicates that there will be fearless, unbroken fellowship with God and with each other.