The Jewish View on Euthanasia.
Jewish law forbids euthanasia in all forms, and is considered an act of homicide.
It may be therefore be reclaimed only by the true Owner of that life. Despite one's noble intentions, an act of mercy- killing is flagrant intervention into a domain that transcends this world. The author of the book HaKtav v'haKaballah explains that this verse refers to a prohibition against euthanasia. Although murder is the opposite of brotherly love, one might think that euthanasia is in fact a permitted expression of brotherly love. This does not mean that one should be lax about relieving the other person's pain.