79:20

فَأَرَاهُ الْآيَةَ الْكُبْرَىٰ

Transliteration:

Faarahu al-ayata alkubra

Word by Word:

Then he showed him the sign the great.

Translations:

And thereupon he [went to Pharaoh and] made him aware of the great wonder [of God's grace].

Then did (Moses) show him the Great Sign.

And he showed him the tremendous token.

So he showed him the mighty sign;

And he showed him the greatest sign,