'Happen' in the Bible

"And now behold, bound by the Spirit I am traveling to Jerusalem, not knowing the things that will happen to me {there},

Therefore I have experienced help from God until this day, [and] I stand here testifying to both small and great, saying nothing except what both the prophets and Moses have said were going to happen,

But they were expecting [that] he was going to swell up or suddenly to fall down dead. So [after] they had waited for a long [time] and saw nothing unusual happen to him, they changed their minds [and] began saying [that] he was a god.