@ JF "There is no death penalty for apostasy in Christianity."

Deuteronomy Chapter 13

6 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;

7 [Namely], of the gods of the people which [are] round about you, nigh unto thee, or far off from thee, from the [one] end of the earth even unto the [other] end of the earth;

8 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:

9 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.

10 And thou shalt stone him with stones, that he die; because he hath sought to thrust thee away from the LORD thy God, which brought thee out of the land of Egypt, from the house of bondage.

11 And all Israel shall hear, and fear, and shall do no more any such wickedness as this is among you.

And just don't try with the old chestnut" but that's the old testament". Heres the words of Jesus as reported by Matthew

"“Do not think that I [Jesus] have come to abolish the Law (the Old Testament) or the Prophets; I have not come to abolish them but to fulfill them. I tell you the truth, until heaven and earth disappear, not the smallest letter, not the least stroke or a pen, will by any means disappear from the Law (the Old Testament) until everything is accomplished. (Matthew 5:17-18)”

The penalty for apostasy in Christianity is death both temporal and spiritual and has been the canon law of the Church for generations, just not applied in recent years with the vigor and enthusiasm it was in recent centuries.

It would help debates here if you actually read your bible before making statements.