'Ever' in the Bible

And Jehovah Elohim said, Behold, Man is become as one of us, to know good and evil. And now, lest he stretch out his hand, and take also of the tree of life, and eat, and live for ever ...!

for all the land that thou seest will I give to thee, and to thy seed for ever.

I will be surety for him: of my hand shalt thou require him; if I bring him not to thee, and set him before thy face, then shall I be guilty toward thee for ever.