This Bible contradiction is from the Skeptic's Annotated Bible.
Mark 16:20 View context
And they went forth, and preached every where, the Lord working with [them], and confirming the word with signs following. Amen.
John 3:2 View context
The same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him.
John 20:30 View context
And many other signs truly did Jesus in the presence of his disciples, which are not written in this book:
Acts 2:22 View context
Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
Matthew 12:39 View context
But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it, but the sign of the prophet Jonas:
Matthew 16:4 View context
A wicked and adulterous generation seeketh after a sign; and there shall no sign be given unto it, but the sign of the prophet Jonas. And he left them, and departed.
Mark 8:12 View context
And he sighed deeply in his spirit, and saith, Why doth this generation seek after a sign? verily I say unto you, There shall no sign be given unto this generation.
Luke 11:29 View context
And when the people were gathered thick together, he began to say, This is an evil generation: they seek a sign; and there shall no sign be given it, but the sign of Jonas the prophet.