'The Twelve' in the Bible

And when the day of Pentecost came [Note: This was a Jewish festival held fifty days following the Passover Festival. Lev. 23:15-21], they [i.e., the twelve apostles] were all gathered together in one place [i.e., their second story living quarters, 1:13 ?].

For these men [i.e., the twelve apostles] are not drunk as you suppose, since it is only nine o'clock in the morning. [Note: The use of Jewish time calculations are employed in this verse].

Then the twelve called the multitude of the disciples unto them, and said, It is not reason that we should leave the word of God, and serve tables.

And he gave him the covenant of circumcision: and so Abraham begat Isaac, and circumcised him the eighth day; and Isaac begat Jacob; and Jacob begat the twelve patriarchs.