Apostasy?

One of the followers of youtube sent me a video with the execution of an apostate from Islam.
The video was a clip of the slaughtering of a man in Somalia most likely. The questioner asked me my opinion on this.
Here is my answer:

Peace be with you
No one is allowed to take the law into their hands. Executions can only be done under the command of the judge or khalifa of the Islamic state. Unfortunately due to ignorance of the Islamic law people take the law into their own hands, and they themselves are not accountable to the same law they enforce. However with regards to the video, I do not know the situation of that case, wether that person was judged or not, or wether those people who executed him were ruling and taking the law into their own hands, without a judge or scholar's approval.

However having said all that, the agreement of all the scholars in Islam is that an apostate is given the chance to repent, later he is talked to by someone with knowledge, and at the discretion of the judge he or she depending on the situation wether they are hostile to the state and the faith, wether they are trying to fight against the state (in islam there is no separation between faith and state), they either get exiled from the Muslim lands, or get the death penalty for treason, depending on the pros and cons of the action. Apostasy is paramount to treason which goes punished with death in most countries, or jail for life.

As we believe in all prophets we do not believe that Islam came up with this law, rather it was a law that was common to all prophets, and Islam did not invent it, nor did prophet Muhammad. Rather it was taken and passed on from previous prophets such as Moses and Jesus.
In the Bible in Deuteronomy 13 vs 6 we read

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.

I do ask those who think of driving around the above verse as OLD LAW or OLD COVENANT to be rational and realize wether old or new, the law was there from the same God that we as Muslims believe in, and according to Christian doctrine, Jesus being the son and one of the 3 persons in the trinity and eternally present with the father before even in this world, He, Jesus if in congruity and full agreement with the Father, was part of the LEGISLATION OF KILLING THE APOSTATE at whatever time, for whatever law old or new.

I hope that helps with your answer.
As Muslims we believe in truth and only truth, and we do not distort the message of God, as the nations before us have done. The Quran is the final revelation to mankind, and the last chance for people to become straight with God. People have moved away from God's laws by mere manipulations of texts and doctrines invalidating what God never invalidated, just because of questioning God's justice.

As Muslims we condemn people who take justice in their hands, we condemn people who brutalize and kill innocent people, and no one is allowed to take the law into their own hands, first and foremost if there is no Islamic state and no khalifa, no judges and people of knowledge to decide the validity of the condemnation and the proper punishment. However it is no secret and as Muslims we are not apologetic for the fact that the punishment for apostasy in most cases in Islam is death.

And God knows best.