Matthew 12:39-40 Darby Translation (DARBY)
39 But he, answering, said to them, A wicked and adulterous generation seeks after a sign, and a sign shall not be given to it save the sign of Jonas the prophet.
40 For even as Jonas was in the belly of the great fish three days and three nights, thus shall the Son of man be in the heart of the earth three days and three nights.
John 2:18-22 Darby Translation (DARBY)
18 The Jews therefore answered and said to him, What sign shewest thou to us, that thou doest these things?
19 Jesus answered and said to them, Destroy this temple, and in three days I will raise it up.
20 The Jews therefore said, Forty and six years was this temple building, and thou wilt raise it up in three days?
21 But *he* spoke of the temple of his body.
22 When therefore he was raised from among [the] dead, his disciples remembered that he had said this, and believed the scripture and the word which Jesus had spoken.