Mercy killing? in favor or not?

Tough subject! The Lord giveth life, the Lord taketh it up again. Does that answer it? -For whosoeuer wil saue his life, shall lose it: and whosoeuer will lose his life for my sake, shall finde it. For what is a man profited, if hee shal gaine the whole world, and lose his owne soule? Or what shall a man giue in exchange for his soule? -Matt XVI:25,26 KJV,1611 -See now, that I, euen I am he, and there is no god with mee: I kill, and I make aliue: I wound, and I heale: neither is there any that can deliuer out of my hand. -Deut XXXII:39 KJV,1611