The act of killing an innocent unborn child.
Some say that the Christians who oppose abortion are wrong, because it is not mentioned in the Bible. But it is.
The followers of Baal had a large idol called Molech. They would build fires underneath this large statue of a standing bull, and when it had become red hot, would place their newborn babies in its arms. The babies would scream and cry. The followers would beat loudly on drums to drown out the noise. Moments later, the baby would be dead.
Is not abortion the same?
"And you shall not let any of your seed pass through Mo'lech, neither shall you profane the name of your God: I am the Lord." -- God's take on abortion.
Abortion is both wrong and unnecessary.