It is not easy to go to Heaven.

Even, Jesus said:

  

「 Strive to enter in at the strait gate: 

for many, I say unto you, will seek to enter in, 

and shall not be able. 」

Luke 13:24

This verse makes people realize that

it is very difficult to enter Heaven.

Due to Weight of those words, so many people are repenting hard.

And, eventually, they collapse.

Jesus really wants people to realize how difficult it is

to enter Heaven during his time on earth.

But the truth is!

It is not just only difficult,

"It is impossible."

Jesus wanted you to come to this realization.

 

「 For I say unto you, 

That except your righteousness shall exceed 

the righteousness of the scribes and Pharisees, 

ye shall in no case enter into the kingdom of heaven. 」 
Matthew 5:20

 

「 So likewise shall my heavenly Father do also unto you, 

if ye from your hearts forgive 

not every one his brother their trespasses. 」
Matthew 18:35

 

「 But I say unto you, That whosoever looketh on a woman 

to lust after her hath committed adultery 

with her already in his heart. 

And if thy right eye offend thee, pluck it out, and cast it from thee: 

for it is profitable for thee that one of thy members should perish, 

and not that thy whole body should be cast into hell. 」
Matthew 5:22-30

  

「 Not every one that saith unto me, Lord, Lord, 

shall enter into the kingdom of heaven; 

but he that "doeth the will of my Father" 

which is in heaven. 」
Matthew 7:21

(What is the Will of my Father?)