'Happen' in the Bible

"It will happen afterward, that I will pour out my Spirit on all flesh; and your sons and your daughters will prophesy. Your old men will dream dreams. Your young men will see visions.

It will happen that whoever will call on the name of Yahweh shall be saved; for in Mount Zion and in Jerusalem there will be those who escape, as Yahweh has said, and among the remnant, those whom Yahweh calls.

It will happen in that day, that the mountains will drop down sweet wine, the hills will flow with milk, all the brooks of Judah will flow with waters, and a fountain will come forth from the house of Yahweh, and will water the valley of Shittim.