1. an ardent longing, as for something lost.
Have you ever truly had a heart for the lost? The most raw prayer is that we will love people as God does, because we know he has a very ardent longing for those he created who don't know him, who are lost on the path of life. God came to earth as Jesus for the sole purpose of giving us a way back to his path, a flashlight when we're lost in the dark.
For the Son of Man came to seek and to save the lost. ~Luke 19:10 (ESV)
God our Savior....desires all people to be saved and to come to the knowledge of the truth. ~1 Timothy 2:4 (ESV)
We can never love completely as Jesus did, who had the love of the father toward all those he met (and didn't). Jesus was, in fact, so outward-focused and cared so much about his people that he forgave them to his very last breath, shouting out to God to forgive them, for they know not what they do. It is hard for us to look past the body of a person and see them for their potential as worshipers of God; it's hard to look past their sin and worldliness, but it is goal for us to strive toward. There was a certain parable where Jesus gave a representation of himself as being the good shepherd. He said that when the sheep drift away, he runs after them because he loves them. We can't save people, but seeing as we are all sheep and were all lost at some point, we can do our best to make others aware of the voice of the shepherd calling out.