Heaven, as we see in the Bible.

Revelation 14:1-4

1 Then I looked, and there before me was the Lamb, standing on Mount Zion, and with him 144,000 who had his name and his Father's name written on their foreheads.

2 And I heard a sound from heaven like the roar of rushing waters and like a loud peal of thunder. The sound I heard was like that of harpists playing their harps.

3 And they sang a new song before the throne and before the four living creatures and the elders. No one could learn the song except the 144,000 who had been redeemed from the earth.

4 These are those who did not defile themselves with women, for they kept themselves pure. They follow the Lamb wherever he goes. They were purchased from among men and offered as first fruits to God and the Lamb.

Revelation 14:13

Then I heard a voice from heaven say, “Write: Blessed are the dead who die in the Lord from now on.” “Yes,” says the Spirit, “they will rest from their labor, for their deeds will follow them.”

Revelation 14:7

He said in a loud voice, “Fear God and give him glory, because the hour of his judgment has come. Worship him who made the heavens, the earth, the sea and the springs of water.”

Revelation 5:9 And they sang a new song: “You are worthy to take the scroll and to open its seals, because you were slain, and with your blood you purchased men for God from every tribe and language and people and nation.

1 John 5:5-8

5 Who is it that overcomes the world? Only he who believes that Jesus is the Son of God.

6 This is the one who came by water and blood—Jesus Christ. He did not come by water only, but by water and blood. And it is the Spirit who testifies, because the Spirit is the truth.

7 For there are three that testify:

8 the Spirit, the water and the blood; and the three are in agreement.

1 John 2:3-4

3 We know that we have come to know him if we obey his commands.

4 The man who says, “I know him,” but does not do what he commands is a liar, and the truth is not in him.

2 Peter 3:10

But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything in it will be laid bare.