This Bible contradiction is from the Skeptic's Annotated Bible.
Joseph was the father of Jesus.
Acts 2:30 View context
Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne;
Acts 13:23 View context
Of this man's seed hath God according to [his] promise raised unto Israel a Saviour, Jesus:
Romans 1:3 View context
Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;
2 Timothy 2:8 View context
Remember that Jesus Christ of the seed of David was raised from the dead according to my gospel:
Hebrews 2:16 View context
For verily he took not on [him the nature of] angels; but he took on [him] the seed of Abraham.
Revelation 22:16 View context
I Jesus have sent mine angel to testify unto you these things in the churches. I am the root and the offspring of David, [and] the bright and morning star.
Joseph was not the father of Jesus.
Matthew 1:18 View context
Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
Luke 1:31-35 View context
And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS.
He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end.
Then said Mary unto the angel, How shall this be, seeing I know not a man?
And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.