The road to heaven is narrow and tight

Luke 13 vs. 24 – Strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able.

You need to struggle to enter heaven because it is not for upcomers.
The door to heaven does not open automatically for people who want to enter.
So, heaven has a tiny door, and you must drop all excess baggage so you can enter.
Unfortunately, Jesus Christ lamented that many people will not be able to enter because the door is very narrow.
Heaven is for a select few who endure sacrifices of righteousness.