'Happen' in the Bible

It shall happen that on the day you go out and cross over the Wadi Kidron, know for certain that {you will surely die}. Your blood will be on your head."

They [were] each bringing his gift; objects of silver and objects of gold, clothing, weapons, spices, horses, and mules. {This used to happen year after year}.

For surely, the thing which he proclaimed by the word of Yahweh against the altar which [is] in Bethel will happen, [as it will] against all the houses of the high places which [are] in the cities of Samaria."

You must take ten loaves of bread in your hand and cakes and a jar of honey, and you must go to him. He shall tell you what will happen to the boy."

And it will happen that I will go from you and the Spirit of Yahweh will carry you up to where I do not know. Then I will come to tell Ahab, but he will not find you, and then he will kill me, [even though] your servant has feared Yahweh from my youth.