as another poster pointed out, not only does every human being need Jesus, every human being is commanded to believe upon Jesus and accept His rules. and yet...
few do. and some who do fall away.
the whole point of 'getting saved' is to become mindful of one's state as a human being, born into sin who desperately needs Jesus for forgiveness, guidance, salvation, etc. in large part to 'save' one from God's wrath, now and in the world to come.
sanctification...gradually, results in less sin, more openness to repenting of sin patterns, etc., and a shift in overall outlook, actions, etc...less worldly, more '...in the world, but not of it...,' etc.