There are a number of contradictions between the Bible and the Book of Mormon. Some of them are substantial doctrines that define key doctrines; others are factual contradictions that may or may not have much in the way of doctrinal consequence, but beg the question: Is the Book of Mormon really the "most correct of any book on earth"?

Salvation is by grace and works.

2 Nephi 25:23

Salvation is by grace alone.

Ephesians 2:8&9

The Fall of man was a necessary part of God's plan.

2 Nephi 2:23-25

The Fall of man was a violation of God's command.

Romans 5:12-14

Jesus was born at Jerusalem

Alma 7:10

Jesus was born in Bethlehem.

Matthew 2:1

The Gospel, Church, and Christianity existed prior to the time of Christ (in the Americas)

2 Nephi 26:12

The Gospel, Church, and Christianity began following the time of Christ.

Matthew 16:18

Children are born without any sin.

Moroni 8:8

Children are born with original sin.

Psalm 51:5

The priesthood did not need to be Levitical.

2 Nephi 5:26 (Lehi was of the tribe of Joseph.)

The priesthood could only be through the lineage of Aaron, a Levite.

Numbers 3:9-10

It was commanded to build temples in the Americas.

Alma 16:13

Jerusalem was explicity chosen by God as the one place for the temple.

1 Kings 8:44-48

At Christ's crucifixion, there was three days of darkness.

Helaman 14:27

At Christ's crucifixion, there were three hours of darkness.

Luke 23:44

At the tower of Babel the Jaredites had a separate language which was spared the confusion of languages.

Ether 1:34-35

At the tower of Babel there was one language, which was then confused by God.

Genesis 11:1