'Necessary' in the Bible
Brethren, it was necessary that the scripture should have been fulfilled, which the Holy Spirit spoke before, by the mouth of David, concerning Judas, who became guide to those who took Jesus;
It is necessary therefore, that of the men who have assembled with us all the time in which the Lord Jesus came in and went out among us,
And Paul and Barnabas spoke boldly and said, It was necessary that the word of God should be first spoken to you; but, since ye thrust it from you, and judge yourselves unworthy of eternal life, lo, we turn to the nations;
For it has seemed good to the Holy Spirit and to us to lay upon you no greater burden than these necessary things:
These things therefore being undeniable, it is necessary that ye should be calm and do nothing headlong.
Wherefore it is necessary to be subject, not only on account of wrath, but also on account of conscience.
But much rather, the members of the body which seem to be weaker are necessary;
I thought it necessary therefore to beg the brethren that they would come to you, and complete beforehand your fore-announced blessing, that this may be ready thus as blessing, and not as got out of you.
but I have thought it necessary to send to you Epaphroditus, my brother and fellow-workman and fellow-soldier, but your messenger and minister to my need,
But it is necessary that he should have also a good testimony from those without, that he may fall not into reproach and the snare of the devil.
and let ours also learn to apply themselves to good works for necessary wants, that they may not be unfruitful.
It was necessary then that the figurative representations of the things in the heavens should be purified with these; but the heavenly things themselves with sacrifices better than these.