Putting it all together

I truly believe that the chapter and verse separations in the Bible are very helpful. Only, sometimes we separate things that were meant to go together.
We were studying John 14 recently and it just dawned on me that the famous words "Let not your heart be troubled..." does not stand alone, but as part of the conversation between Jesus and his disciples at the last supper. Peter has just been told that he will deny Christ three times. Even so, Jesus tells him not to let his heart be troubled.
Now, some will take this as an excuse to be mediocre and sinful, after all, God is going to love us anyway. But I think that even though Jesus knows just how bad we can be, I am encouraged not to be as bad as I can be.
Just a thought.