since our God says that He is God of the living even about those now deceased it might be wise to check scripture on the ressurecction since no one is really dead to Him in that sense. all will be raised at the resurrection of the dead and it is appointed once for man to die. this is part of the process. this is why God is able to forgive even murder. even His only begotten son Jesus was brutally murdered. But God allowed it and raised Jesus from the dead to prove that He has the power over life and death. job13:15 job declares that even though He slay me; yet will i hope in Him
He also has the power to kill those who are incorrigibly wicked...
Rev 21:8 But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.
Which destroys the body and soul and leaves nothing but ash...
Mat 10:28 And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.
Mal 4:1 For, behold, the day cometh, that shall burn as an oven; and all the proud, yea, and all that do wickedly, shall be stubble: and the day that cometh shall burn them up, saith the LORD of hosts, that it shall leave them neither root nor branch.
Mal 4:2 But unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth, and grow up as calves of the stall.
Mal 4:3 And ye shall tread down the wicked; for they shall be ashes under the soles of your feet in the day that I shall do this, saith the LORD of hosts.
Rev 20:13 And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.
Rev 20:14 And death and hell were cast into the lake of fire. This is the second death.
Rev 20:15 And whosoever was not found written in the book of life was cast into the lake of fire.
Not life in some other place, death for all eternity. God does kill people who rebel against Him.