'Two' in the Bible

In those days, when Mordecai is sitting in the gate of the king, hath Bigthan been wroth, and Teresh, (two of the eunuchs of the king, the keepers of the threshold,) and they seek to put forth a hand on king Ahasuerus,

and it is found written that Mordecai had declared concerning Bigthana and Teresh, two of the eunuchs of the king, of the keepers of the threshold, who sought to put forth a hand on king Ahasuerus.

the Jews have established and received upon them, and upon their seed, and upon all those joined unto them, and it doth not pass away, to be keeping these two days according to their writing, and according to their season, in every year and year;