I suspect a lot of people think they are going to heaven, yet they refuse to do the thing they need to do to get there:
From that time Jesus began to preach, saying, "Repent, for the kingdom of heaven is at hand." Matt 4:17 RSV
[19] Open to me the gates of righteousness,
that I may enter through them
and give thanks to the LORD.
[20] This is the gate of the LORD;
the righteous shall enter through it.
Psalm 118:19-20 RSV
The people who have repented are already in heaven.
From that time Jesus began to preach, saying, "Repent, for the kingdom of heaven is at hand." Matt 4:17 RSV
[19] Open to me the gates of righteousness,
that I may enter through them
and give thanks to the LORD.
[20] This is the gate of the LORD;
the righteous shall enter through it.
Psalm 118:19-20 RSV
The people who have repented are already in heaven.