Jeremiah 17:9

9 The heart is deceitful above all things,
and desperately sick;
who can understand it?

Matthew 26:33-35

33 aPeter answered him, “Though they all fall away because of you, I will never fall away.” 34 bJesus said to him, Truly, I tell you, this very night, cbefore the rooster crows, you will deny me three times.” 35 dPeter said to him, “Even if I must die with you, I will not deny you!” And all the disciples said the same.

Copyright information for ESV