'Comforter' in the Bible

So I returned, and considered all the oppressions that are done under the sun: and behold the tears of such as were oppressed, and they had no comforter; and on the side of their oppressors there was power; but they had no comforter.

Her filthiness is in her skirts; she remembereth not her last end; therefore she came down wonderfully: she had no comforter. O LORD, behold my affliction: for the enemy hath magnified himself.

For these things I weep; mine eye, mine eye runneth down with water, because the comforter that should relieve my soul is far from me: my children are desolate, because the enemy prevailed.

And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;

But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.

But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:

Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.