Verses with the word syene in the Old Testament (2 verses):

Ezekiel 29:10
Behold, therefore I am against thee, and against thy rivers, and I will make the land of Egypt utterly waste and desolate, from the tower of Syene even unto the border of Ethiopia.

Ezekiel 30:6
Thus saith the LORD; They also that uphold Egypt shall fall; and the pride of her power shall come down: from the tower of Syene shall they fall in it by the sword, saith the Lord GOD.