Verses with the word weeks in the Apocrypha (3 verses):

2 Esdras 6:35
And it came to pass after this, that I wept again, and fasted seven days in like manner, that I might fulfil the three weeks which he told me.

Tobit 2:1
Now when I was come home again, and my wife Anna was restored unto me, with my son Tobias, in the feast of Pentecost, which is the holy feast of the seven weeks, there was a good dinner prepared me, in the which I sat down to eat.

2 Maccabees 12:31
They gave them thanks, desiring them to be friendly still unto them: and so they came to Jerusalem, the feast of the weeks approaching.