I went to the 8:30am service for the first time in my life and was shocked to see how packed it was. So painfully early on a weekend morning! This passage from Pastor Paul's sermon really stayed with me, from Romans 5:
6You see, at just the right time, when we were still powerless, Christ died for the ungodly. 7Very rarely will anyone die for a righteous man, though for a good man someone might possibly dare to die. 8But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.
I actually had never come across that particular verse before, and it very neatly boiled down for me why I believe what I believe. And I have to laugh a little when I hear people asking the question, "what is love?" Because for me, that right there, is it--giving someone what s/he needs the most, when s/he least deserves it.