'Needs' in the Bible

He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.

And they said, Stand back. And they said, This one fellow came in to sojourn, and he will needs be a judge: now will we deal worse with thee, than with them. And they pressed sore upon the man, even Lot, and drew near to break the door.

And the servant said unto him, Peradventure the woman will not be willing to follow me unto this land. Must I needs bring thy son again unto the land from whence thou camest?

And now, though thou wouldest needs be gone, because thou sore longedst after thy father's house, yet wherefore hast thou stolen my gods?

is it a small thing that thou hast brought us up out of a land flowing with milk and honey, to kill us in the wilderness, but thou must needs make thyself also a prince over us?

For we must needs die, and are as water split on the ground, which cannot be gathered up again; neither doth God take away life, but deviseth means, that he that is banished be not an outcast from him.

They are like a palm-tree, of turned work, and speak not: they must needs be borne, because they cannot go. Be not afraid of them; for they cannot do evil, neither is it in them to do good.