Enter Through The Narrow Gate

I am looking ahead to our fellowship meeting tomorrow and looking at Matthew 7 where Jesus begins to draw the Sermon on the Mount to a close.  It is in verse 13 that we read the famous command to "enter through the narrow gate."  Although Jesus has been preaching to repent and preaching the Kingdom, outside of his call to the first disciples, this seems to me one of the first fully articulated evangelistic calls that we can read.  What has struck me is that it comes at the end of the Sermon on the Mount.  Here, is one of the fullest examples of indepth teaching on what it means to live as Kingdom citizens with some pretty deep and challenging stuff.   Jesus seems to be focusing primarily on the disciples as he went up on the mountain and the disciples came to him.  The crowds however, are there in the background, right there on the periphery.  It seems that after all this teaching Jesus then takes the opportunity to challenge the crowd to make a decision about what they have been overhearing when He makes the plea to enter through the narrow gate.  I am wondering then, if there are some lessons for evangelism and discipleship here.  In particular, I have been brought back to a question I was thinking through a while back regarding the relationship between discipleship and evangelism.  I am thinking that perhaps there is a bit of a blurring of the line between what I have often thought about as two distinct steps for lack of a better word.  We first evangelize and then disciple those who respond.  For sure this is often the case.  I am thinking, however, that in some cases maybe more teaching about who Jesus is, what He has done for us and what He wants to do in and through us may be in order.  Perhaps a bit more teaching about what the Kingdom is and what it means to live a Kingdom citizens is in order before we can expect a decision.   Could this be the example of the Sermon on the Mount?  If we do take this approach would we not have people making really informed decisions?  Would we not also have people making decisions with a fuller understanding of the roles and responsibilities of kingdom citizens?  Would we not have more who understand the call to make disciples, would we not have more disciple makers?
These are just some thoughts from the day.