Matthew 12:39-40 NIV

39 He answered, "A wicked and adulterous generation asks for a miraculous sign! But none will be given it except the sign of the prophet Jonah.1

References for Matthew 12:39

40 For as Jonah was three days and three nights in the belly of a huge fish,2 so the Son of Man3 will be three days and three nights in the heart of the earth.4

References for Matthew 12:40