'Necessary' in the Bible

If anyone thinks he is acting inappropriately toward his virgin, if she is past the bloom of youth and it seems necessary, he should do what he wishes; he does not sin. Let them marry.

If anyone imagines that he knows and understands anything [of divine matters, without love], he has not yet known as he ought to know.

For indeed it is necessary that there be factions among you, in order that those who are approved may become evident among you.

Nay, much more those members of the body, which seem to be more feeble, are necessary:

But when that which is complete is come, then that which is in part will be no longer necessary.

for the spirits of prophets are subject to the prophets [the prophecy is under the speaker’s control, and he can stop speaking];

For it is necessary for him to reign until he has put all his enemies under his feet.

Foolish man, it is necessary for the seed which you put into the earth to undergo death in order that it may come to life again:

For it is necessary [for] this perishable [body] to put on incorruptibility, and this mortal [body] to put on immortality.

On the first day of the week, let every one of you put by him in store, in measure as he has done well in business, so that it may not be necessary to get money together when I come.