Why is OK to harrass mormons?

[Tuuvi]

This does agree with your doctrine if I am interpreting it right.
To quote from the BoM:(Jacob 4)[INDENT][I]4 For, for this intent have we written these things, that they may know that we knew of Christ, and we had a hope of his glory many hundred years before his coming; and not only we ourselves had a hope of his glory, but also all the holy prophets which were before us.

5 Behold, they believed in Christ and worshiped the Father in his name, and also we worship the Father in his name. And for this intent we keep the law of Moses, it pointing our souls to him; and for this cause it is sanctified unto us for righteousness, even as it was accounted unto Abraham in the wilderness to be obedient unto the commands of God in offering up his son Isaac, which is a similitude of God and his Only Begotten Son.

6 Wherefore, we search the prophets, and we have many revelations and the spirit of prophecy; and having all these witnesses we obtain a hope, and our faith cometh unshaken, insomuch that we truly can command in the name of Jesus and the very trees obey us, or the mountains, or the waves of the sea.

In those verses he is talking about the Nephites specifically. AFAIK the Isrealites in Jerusalem never knew about Jesus until his birth. But yes this point of Rhyfelwyr's:

The law was given to the Jews to point them to Christ once they saw that they were unable to fulfil it (see Hebrews!). In calling King David a Christian, I mean that he was born again and saved not by the law but by the blood of Christ. When I say 'Christian' I mean simply one that has been saved.

is in agreement with Mormon doctrine. When I said I didn't know what he meant by King David being Christian I literally didn't know.

Just as with the sabbath issue above, it is clear that water baptism was a Jewish custom and as such was only a shadow of baptism by the Holy Spirit. Sadly people are determined to return to the bondage of the law.

Didn't the apostle Paul and the other missionaries of his time baptize new converts? Also in John 3:5 Jesus says that a person needs to be born of the water and of the spirit in order to enter the kingdom of God, and in Mark 16:16 it says that whoever believes and is baptized will be saved.

And BTW the Mormon church practices both baptism by immersion and the Holy Spirit, the two go hand in hand in the Mormon religion.