Highlight specific word in verse

The following link hightlights verse 4.
https://www.lds.org/scriptures/pgp/abr/1.4?lang=eng

Is there a way I can highlight only the words "I sought" in verse 4?

Use the find feature in your web browser. I may depend on how your browser works, but the browser's find feature may be able to highlight everything at one time.

If you're trying to take notes on them, for saving in your online LDS notebook, then you'd have to find them all with the browser's find and then you'd need to manually mark each of them so Notes will remember them.