Verses with the word ariel in the Old Testament (4 verses):

Ezra 8:16
Then sent I for Eliezer, for Ariel, for Shemaiah, and for Elnathan, and for Jarib, and for Elnathan, and for Nathan, and for Zechariah, and for Meshullam, chief men; also for Joiarib, and for Elnathan, men of understanding.

Isaiah 29:1
Woe to Ariel, to Ariel, the city where David dwelt! add ye year to year; let them kill sacrifices.

Isaiah 29:2
Yet I will distress Ariel, and there shall be heaviness and sorrow: and it shall be unto me as Ariel.

Isaiah 29:7
And the multitude of all the nations that fight against Ariel, even all that fight against her and her munition, and that distress her, shall be as a dream of a night vision.