Come to think of it, Jesus was last seen in the Temple at age 12, then no mention of him until he ‘arrived’ at 30. The Temple was destroyed in AD 70.
Thirty is the age for koach, strength/power:
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Was 30 actually known as the age of koach, strength and power? I know it was the age for becoming a priest, and have thought that’s why at least in part Jesus began His ministry at that age, but I went looking to just be sure I hadn’t misread the part about priests needing to be 30, and came across this interesting article:
I don’t know if I agree with its every conclusion, but it makes many very interesting points. It says that the Theophilus to whom Luke wrote was the high priest of the time, and it discusses the office of sagan/segan, the deputy to the high priest, called a sagan in Hebrew and segan in Aramaic (which got me reading about both and about a little about Carl Sagan). I didn’t know there was such an office. Then it talks about how Joseph, Jesus’ father, was called a tekton in the New Testament, and this writer says that wouldn’t have meant to the Jews “carpenter” but one who was a teacher. I haven’t finished the article yet but it makes some interesting points for looking into.
Was 30 actually known as the age of koach
Yes, this was the word used in the quote from Pirkei Avot:
He [Yehudah ben Teima] used to say: Five years [is the age] for [the study of] Scripture, Ten [is the age] for [the study of] Mishnah, Thirteen [is the age] for [observing] commandments, Fifteen [is the age] for [the study of] Talmud, Eighteen [is the age] for the [wedding] canopy, Twenty [is the age] for pursuit, Thirty [is the age] for [full] strength [כֹּחַ, koach], Forty [is the age] for understanding, Fifty [is the age] for [giving] counsel, Sixty [is the age] for mature age, Seventy [is the age] for a hoary head, Eighty [is the age] for [superadded] strength, Ninety [is the age] for [a] bending [stature], One hundred, is [the age at which one is] as if dead, passed away, and ceased from the world.Compare the word used in the Greek:
Luke 4:14 And Jesus returned in the power of the Spirit into Galilee: and there went out a fame of him through all the region round about.
Regarding Theophilus, here's something much less complicated:
Apart from its use as the name of a mark of punctuation ('), the term apostrophe is used for a kind of formal invocation. Sometimes the invocation is to an absent (or even dead) person: "Milton," writes Wordsworth, "thou shouldst be living at this hour;/ England hath need of thee." At other times, an inanimate object can be invoked: "O you gentle day sky!" Apostrophizing an inanimate object may involve personifying it.
With its roots in Greek drama and the Greek language (meaning ‘turning away’), apostrophe is the rhetorical act of addressing a third party in a speech or piece of poetry or prose.
http://apostrophe.guide/apostrophe-as-figure-of-speech/
The word is used here:
Romans 11:26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
Which is quoted from
Isaiah 59:20 And the Redeemer shall come to Zion, and unto them that turn from transgression in Jacob, saith the LORD.
Okay that was a detour but I tossed that in because it goes back to the same root word of turning as in 70 for the age of turning.
My point about the apostrophe pertains to Theophilus because the name means "Friend of God", so who was he..
2 Chronicles 20:7 Art not thou our God, who didst drive out the inhabitants of this land before thy people Israel, and gavest it to the seed of Abraham thy friend for ever?
Isaiah 41:8 But thou, Israel, art my servant, Jacob whom I have chosen, the seed of Abraham my friend.
James 2:23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
Luke 1:3-4 It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus, 4 That thou mightest know the certainty of those things, wherein thou hast been instructed.
Acts 1:1 The former treatise have I made, O Theophilus, of all that Jesus began both to do and teach,