Authenticity

In the arts, history, archaeology, the study of antiques, and similar fields involving unique or scarce artifacts from the past, and, with regard to documents in law, authenticity (Greek: ἀρχηγός from 'archēgos'='author').

1.  the chief leader, prince
    - of Christ
2. one that takes the lead in any thing and thus affords an example, a predecessor in a matter, pioneer
3. the author

Strong's Number: 747 Greek: archegos
Author: translated "Prince" in Act 3:15 (marg., "Author") and Acts 5:31, but "Author" in Hebrews 2:10, RV, "Captain," RV marg., and AV, and "Author" in Hebrews 12:2, primarily signifies "one who takes a lead in, or provides the first occasion of,anything." In the Septuagint it is used of the chief of a tribe or family, Numbers 13:2 (RV, prince); of the "heads" of the children of Israel, Numbers 13:3; a captain of the whole people, Numbers 14:4; in Micah 1:13, of Lachish as the leader of the sin of the daughter of Sion: there, as in Hebrews 2:10, the word suggest a combination of the meaning of leader with that of the source from whence a thing proceeds. That Christ is the Prince of life signifies, as Chrysostom says, that "the life He had was not from another; the Prince or Author of life must be He who has life from Himself." But the word does not necessarily combine the idea of the source or originating cause with that of leader. In Hebrews 12:2 where Christ is called the "Author and Perfecter of faith," He is represented as the one who takes precedence in faith and is thus the perfect Exemplar of it. The pronoun "our" does not correspond to anything in the original, and may well be omitted. Christ in the days of His flesh trod never deviating the path of faith, and as the Perfecter has brought it to a perfect end in His own person. Thus He is the leader of all others who tread that path.

In Acts 28:16 some mss. have the word stratopedarches (lit., "camp-commander"), which some take to denote a praetorian prefect, or commander of the praetorian cohorts, the Emperor's bodyguard, "the captain of the praetorian guard." There were two praetorian prefects, to whose custody prisoners sent bound to the Emperor were consigned. But the word probably means the commander of a detached corps connected with the commissariat and the general custody of prisoners.

Prince:
primarily an adjective signifying "originating, beginning," is used as a noun, denoting "a founder, author, prince or leader," Acts 3:15, "Prince" (marg., "Author"); Acts 5:31

As Christians

In one sense, the idea of being authentic really has a lot to do with the ways that we, as Christians, know we ought to act, and ways in which we would want others to perceive us, and ways that people talk about us with others.
For example, here are two possible ways someone might be referred to:

1. "Oh, that Bob, he's such a liar."
2. "Oh, that Bob, you can trust him."

If there is really no good reason to suggest, or even suspect, that Bob might be a liar, it's not very likely that anyone would say that Bob is a such a liar. On the other hand, if someone is commonly referred to as a liar there is a good chance they probably are one.

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Authenticity

In the arts, history, archaeology, the study of antiques, and similar fields involving unique or scarce artifacts from the past, and, with regard to documents in law, authenticity (Greek: ἀρχηγός from 'archēgos'='author')

1. the chief leader, prince
* of Christ
2. one that takes the lead in any thing and thus affords an example, a predecessor in a matter, pioneer
3. the author

Strong's Number: 747 Greek: archegos
Author:
translated "Prince" in Act 3:15 (marg., "Author") and Acts 5:31, but "Author" in Hebrews 2:10, RV, "Captain," RV marg., and AV, and "Author" in Hebrews 12:2, primarily signifies "one who takes a lead in, or provides the first occasion of,anything." In the Septuagint it is used of the chief of a tribe or family, Numbers 13:2 (RV, prince); of the "heads" of the children of Israel, Numbers 13:3; a captain of the whole people, Numbers 14:4; in Micah 1:13, of Lachish as the leader of the sin of the daughter of Sion: there, as in Hebrews 2:10, the word suggest a combination of the meaning of leader with that of the source from whence a thing proceeds. That Christ is the Prince of life signifies, as Chrysostom says, that "the life He had was not from another; the Prince or Author of life must be He who has life from Himself." But the word does not necessarily combine the idea of the source or originating cause with that of leader. In Hebrews 12:2 where Christ is called the "Author and Perfecter of faith," He is represented as the one who takes precedence in faith and is thus the perfect Exemplar of it. The pronoun "our" does not correspond to anything in the original, and may well be omitted. Christ in the days of His flesh trod never deviating the path of faith, and as the Perfecter has brought it to a perfect end in His own person. Thus He is the leader of all others who tread that path.

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Rhabbouni

Rhabbouni, (master, chief, prince. Rhabbouni is a title of honour Mary used to address Jesus. Strong's G4462 of Aramaic origin):

Jesus said to her, "Mary." She turned and said to him in Aramaic, "Rabboni!" (which means Teacher). John 20:16 ESV

The Hebrew form rabbi used as a title of Jesus. (Strong's G4461 of Hebrew origin):

• And Jesus said to him, "What do you want me to do for you?" And the blind man said to him, "Rabbi, let me recover my sight." -Mark 10:51
• Judas, who would betray him, answered, "Is it I, Rabbi?" He said to him, "You have said so." -Matthew 26:25
• And Peter said to Jesus, "Rabbi, it is good that we are here. Let us make three tents, one for you and one for Moses and one for Elijah." -Mark 9:5
• And Peter remembered and said to him, "Rabbi, look! The fig tree that you cursed has withered." -Mark 11:21
• And when he came, he went up to him at once and said, "Rabbi!" And he kissed him. -Mark 14:45
• Nathanael answered him, "Rabbi, you are the Son of God! You are the King of Israel!" -John 1:49
• Meanwhile the disciples were urging him, saying, "Rabbi, eat." -John 4:31
• When they found him on the other side of the sea, they said to him, "Rabbi, when did you come here?" -John 6:25
  
• And his disciples asked him, "Rabbi, who sinned, this man or his parents, that he was born blind?" -John 9:2
• The disciples said to him, "Rabbi, the Jews were just now seeking to stone you, and are you going there again?" -John 11:8

In both Aramaic and Hebrew, it would have been רבוני. The Hebrew form of this word is attested in Codex Kaufman to the Mishnah.

The word rabbi derives from the Hebrew root word רַב, rav, which in biblical Hebrew means ‘great’ in many senses, including "revered." The word comes from the Semitic root R-B-B, and is cognate to Arabic ربّ rabb, meaning "lord" (generally used when talking about God, but also about temporal lords). As a sign of great respect, some great rabbis are simply called "The Rav."

Rabbi is not an occupation found in the Torah (i.e. the Pentateuch) as such, and ancient generations did not employ related titles such as Rabban, Ribbi, or Rab to describe either the Babylonian sages or the sages in Israel.[1] Even the very eminent Biblical prophets are referred to as "Haggai the prophet" e.g. The titles "Rabban" and "Rabbi" are first mentioned in Hebrew scriptures in the Mishnah (c. 200 CE). The term was first used for Rabban Gamaliel the elder, Rabban Simeon his son, and Rabban Johanan ben Zakkai, all of whom were patriarchs or presidents of the Sanhedrin.[2] A Greek transliteration of the word is also found in the books of Matthew, Mark and John in the New Testament, where it is used in reference to Jesus.

The basic form of the rabbi developed in the Pharisaic and Talmudic era, when learned teachers assembled to codify Judaism's written and oral laws. In more recent centuries, the duties of the rabbi became increasingly influenced by the duties of the Protestant Christian Minister, hence the title "pulpit rabbis," and in 19th century Germany and the United States rabbinic activities including sermons, pastoral counseling, and representing the community to the outside, all increased in importance.

Within the various Jewish denominations there are different requirements for rabbinic ordination, and differences in opinion regarding who is to be recognized as a rabbi.

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