'Necessary' in the Bible

Then Paul and Barnabas waxed bold, and said, It was necessary that the word of God should first have been spoken to you: but seeing ye put it from you, and judge yourselves unworthy of everlasting life, lo, we turn to the Gentiles.

For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things;

Who also honoured us with many honours; and when we departed, they laded us with such things as were necessary.

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

Therefore I thought it necessary to exhort the brethren, that they would go before unto you, and make up beforehand your bounty, whereof ye had notice before, that the same might be ready, as a matter of bounty, and not as of covetousness.

Yet I supposed it necessary to send to you Epaphroditus, my brother, and companion in labour, and fellowsoldier, but your messenger, and he that ministered to my wants.

And let ours also learn to maintain good works for necessary uses, that they be not unfruitful.

It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.