'Happen' in the Bible

You took some of your clothes, made for yourself high places of various colors and played the harlot on them, which should never come about nor happen.

And when they say to you, ‘Why do you groan?’ you shall say, ‘Because of the news that is coming; and every heart will melt, all hands will be feeble, every spirit will faint and all knees will be weak as water. Behold, it comes and it will happen,’ declares the Lord God.”