'Excellency' in the Bible

There is none like unto God, O Jeshurun, Who rideth upon the heavens for thy help, And in his excellency on the skies.

Happy art thou, O Israel: Who is like unto thee, a people saved by Jehovah, The shield of thy help, And the sword of thy excellency! And thine enemies shall submit themselves unto thee; And thou shalt tread upon their high places.