'Happens' in the Bible

and if it happens that the king’s wrath rises and he says to you, ‘Why did you go so near to the city to fight? Did you not know that they would shoot from the wall?

Now Ahimaaz the son of Zadok said once more to Joab, “But whatever happens, please let me also run after the Cushite.” And Joab said, “Why would you run, my son, since you will have no reward for going?”

“But whatever happens,” he said, “I will run.” So he said to him, “Run.” Then Ahimaaz ran by way of the plain and passed up the Cushite.