Analysis of information sources in references of the Wikipedia article "Tektōn" in English language version.
When a large amount had been collected, the king and Jehoiada the high priest put carpenters and masons to work and thus restored the temple.
In 2 Timothy 2:15 Paul said, 'Be diligent to present yourself approved to God, an unashamed workman, cutting straight the word of the truth.' To cut ... You as an unashamed workman have to cut the word straight as in carpentry.
The corresponding Aramaic (or Hebrew) term would be NGR or NGRA (naggar, naggara'). This word, however, is not found in biblical Aramaic or Hebrew, or in Aramaic documents of the New Testament period.
However, if this term is dependent upon the Aramaic nagger (craftsman), the Talmud later takes this metaphor to refer to 'scholar' or 'learned man,' that is, a rabbi. Such a later Talmudic meaning would place Jesus within a rabbinically schooled family but there seems to be some surprise among Jewish priests, at the level of boy Jesus' development that it is more likely to take the word as a 'carpenter' or 'builder' or 'day laborer.' So others knew him as a carpenter and the son of the carpenter.
