20 so that people may see and know, may consider and understand, that the hand of the LORD has done this, that the Holy One of Israel has created it.

Read Isaiah 41:20 Using Other Translations

That they may see, and know, and consider, and understand together, that the hand of the LORD hath done this, and the Holy One of Israel hath created it.
that they may see and know, may consider and understand together, that the hand of the LORD has done this, the Holy One of Israel has created it.
I am doing this so all who see this miracle will understand what it means— that it is the LORD who has done this, the Holy One of Israel who created it.