Let me preface this by saying I'm not a christan so I'm not going to act like I'm very informed on this. But that is the while point of the old version the new. It's to show evolution and that ideas and things have changed.
On one hand the Old Testament is acts of GODS violence vs what the acts of ever faithful Muslim must do. That not even in the same zip code. Show me where in either testament God or Jesus says to convert or kill the nine believes
All I am saying is that you can't ignore the old testament because you feel like it and focus on the new testament because it fits your agenda. Not the way it works.
As for the last part, here you go. Remember, the bible is the word of god.
"If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, which is as thine own soul, entice thee secretly, saying,
Let us go and serve other gods, which thou hast not known, thou, nor thy fathers; Namely, of the gods of the people which are round about you ... Thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him:
But thou shalt surely kill him; thine hand shall be first upon him to put him to death, and afterwards the hand of all the people. And thou shalt stone him with stones, that he die." -- Dt.13:6-10
"Anyone arrogant enough to reject the verdict of the judge or of the priest who represents the LORD your God must be put to death. Such evil must be purged from Israel." (Deuteronomy 17:12 NLT)
"They entered into a covenant to seek the Lord, the God of their fathers, with all their heart and soul; and everyone who would not seek the Lord, the God of Israel, was to be put to death, whether small or great, whether man or woman." (2 Chronicles 15:12-13 NAB)
"Suppose you hear in one of the towns the LORD your God is giving you that some worthless rabble among you have led their fellow citizens astray by encouraging them to worship foreign gods. In such cases, you must examine the facts carefully. If you find it is true and can prove that such a detestable act has occurred among you, you must attack that town and completely destroy all its inhabitants, as well as all the livestock. (Deuteronomy 13:13-19 NLT)
