'Forever' in the Bible

If only they would commit to fear me and keep all my commands, then it will go well with them and their children forever.

Be sure to observe all these words that I'm commanding you, in order that life may go well for you and your children after you forever, for this is good and right in the eyes of the LORD your God."

then take an awl and pierce through his earlobe into the door. Then he will be your slave forever. You are to do the same for your female slaves.

"The secret things belong to the LORD our God, but what has been revealed belongs to us and to our children forever, so that we might observe the words of this Law."

"I solemnly swear to heaven I say "As certainly as I'm alive and living forever,