'Twelve' in the Bible

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.

And all the men were about twelve.

Because that thou mayest understand, that there are yet but twelve days since I went up to Jerusalem for to worship.

Unto which promise our twelve tribes, instantly serving God day and night, hope to come. For which hope's sake, king Agrippa, I am accused of the Jews.