Does Luke 13:24 give us a more vivid picture of how many people will be saved? I mean how many times have we said 'let me see' or 'let me try'. Or how many times have we felt like - I'm trying to be a Christian.  Seems like trying is not good enough according to Luke 13:24:


  Make every effort to enter through the narrow door, because many, I tell you, will try to enter and will not be able to.


For example, as a Christian, I've been trying to give at least my tithe, but have always failed because I hold back. So if I don't change NOW, I'm not gonna make it. Right or Wrong. Is there anywhere else in the Bible that reads trying is not good enough?

There are about 7 billion people on earth. Taking Luke 13:24 in mind, is a FEW like 7000 people.
Any time you hear anything along the lines of "I'm trying to be a Christian", a giant red flag should immediately go up in your mind. Whoever said that is either playing fast and loose with words or they have completely missed the point.

Being a Christian is a binary state (our position as either lost or saved in the eyes of God) that is not determined by anything we could ever do but on something somebody else did in our stead. This is so fundamental to Christianity that our way of speaking should never include a suggestion that we could ever do anything to change that status.


  1 Corinthians 4:7 (ESV)
  For who sees anything different in you? What do you have that you did not receive? If then you received it, why do you boast as if you did not receive it?


Of course there are things we do in response to having had our status changed, but the way we talk about these things should clearly reflect their nature.


  Ephesians 4:1 (ESV)
  I therefore, a prisoner for the Lord, urge you to walk in a manner worthy of the calling to which you have been called,


By the same token I think your question is symptomatic of a similar misunderstanding. Never is "trying hard" connected to "entering the Kingdom of God". In fact from beginning to end you will find a long saga about the God who does all of the doing to save his people.

The question you should be asking yourself in light of what you know about your life is more along the lines of "are my current desires and resulting actions evidence that I have been fundamentally changed and do I understand this change to be God's handiwork as effected by Christ who has adopted me?"

Answer that question and your other one will become clear.