ישעיהו י:יג פירוש: רש״י ואבן עזרא

For he said, With the strength of my hand I accomplished this None of my might is from the Holy One, blessed be He.

עשיתי I have acted valiantly. ⁹A. V., I have done it. Supply גבורה valour.

I am clever [More exactly,] I have become clever.