This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

He was alone.

1 Samuel 21:1 View context

Then came David to Nob to Ahimelech the priest: and Ahimelech was afraid at the meeting of David, and said unto him, Why [art] thou alone, and no man with thee?

He was with others.

Matthew12:3-4 View context

But he said unto them, Have ye not read what David did, when he was an hungred, and they that were with him;

How he entered into the house of God, and did eat the shewbread, which was not lawful for him to eat, neither for them which were with him, but only for the priests?

Mark 2:25-26 View context

And he said unto them, Have ye never read what David did, when he had need, and was an hungred, he, and they that were with him?

How he went into the house of God in the days of Abiathar the high priest, and did eat the shewbread, which is not lawful to eat but for the priests, and gave also to them which were with him?

Luke 6:3-4 View context

And Jesus answering them said, Have ye not read so much as this, what David did, when himself was an hungred, and they which were with him;

How he went into the house of God, and did take and eat the shewbread, and gave also to them that were with him; which it is not lawful to eat but for the priests alone?