'Need' in the Bible

for even owing to be teachers, because of the time, again ye have need that one teach you what are the elements of the beginning of the oracles of God, and ye have become having need of milk, and not of strong food,

If indeed, then, perfection were through the Levitical priesthood -- for the people under it had received law -- what further need, according to the order of Melchisedek, for another priest to arise, and not to be called according to the order of Aaron?

for of patience ye have need, that the will of God having done, ye may receive the promise,