For a testament is confirmed by death. Otherwise, it as yet has no force, as long as the one who testifies lives
Other versions
King James Version
For a testament is of force after men are dead: otherwise it is of no strength at all while the testator liveth.English Standard Version
For a will takes effect only at death, since it is not in force as long as the one who made it is alive.New International Version
because a will is in force only when somebody has died; it never takes effect while the one who made it is living.