Romans 3:23 (NKJ)
"for all have sinned and fall short of the glory of God,"
This is the begining of Romans Road, it's a few verses that layout a scriptural roadmap of what Christ has done for us and how we can have eternal life. It makes it easier to share the gospel knowing these next verses. I think years ago I knew them, but I need to memorize them again! :)
ps - dont forget to take time to run through the past 6 verses, it really will help solidify them in your brain.