From BiblePortal Wikipedia

Holman Bible Dictionary [1]

parakletos  John 14:16 14:26 John 15:26 John 16:7 parakletos

In line with the history of the term,  1 John 2:1 employs parakletos in a forensic sense, portraying a courtroom scene in which Jesus Christ, the righteous “Advocate,” intercedes with God on behalf of sinners. Although forensic associations are present in the Gospel of John (  John 15:26;  John 16:8-11 ), the Helper does not specifically function as “Advocate.”

The Helper, who could not come until Jesus departed ( John 16:7 ), functions as the abiding presence of Jesus among His disciples ( John 14:16-18 ). Nearly everything said of the Helper is also said of Jesus in the Gospel, and the Helper actually comes as “another parakletos” ( John 14:16 ), implying that Jesus had been the first ( 1 John 2:1 ).

Jesus described the role of the Helper primarily with verbs of speaking. The Helper would be sent by the Father to “teach” the disciples and to bring to remembrance all Jesus “said” to them ( John 14:26;  John 16:14-15 ). Like Jesus, the Helper was “sent” to “bear witness” ( John 15:26-27 ). The Helper's function in relation to the world involves “reproving” it concerning sin, righteousness, and judgment ( John 16:8 ). The Helper would also “guide” Jesus' disciples into all truth by “speaking” what He hears and “showing” what is to come ( John 16:13 ). By so doing He would “glorify” Jesus ( John 16:14 ). See Advocate; Comforter; Counselor; Holy Spirit; Paraclete .

R. Robert Creech

King James Dictionary [2]

HELP'ER, n. One that helps, aids or assists an assistant an auxiliary.

1. One that furnishes or administers a remedy.

Compassion--is oftentimes a helper of evils.

2. One that supplies with any thing wanted with to.

A helper to a husband.

3. A supernumerary servant.

Webster's Dictionary [3]

(n.) One who, or that which, helps, aids, assists, or relieves; as, a lay helper in a parish.