You will... but I will

 And when they had sung a hymn, they went out to the Mount of Olives. Then Jesus said to them, “You will all fall away because of me this night. For it is written, ‘I will strike the shepherd, and the sheep of the flock will be scattered.’ But after I am raised up, I will go before you to Galilee.” Peter answered him, “Though they all fall away because of you, I will never fall away.” Jesus said to him, “Truly, I tell you, this very night, before the rooster crows, you will deny me three times.” Peter said to him, “Even if I must die with you, I will not deny you!” And all the disciples said the same.(Matthew 26:30-35 ESV)
We always focus on the negative.  When Jesus tells of the impending future, He tells them not only that they will run scared, but that He will rise again.  Their response?  Tell Jesus what they will do.  It's not about what we do, but what He does.