Berean Study Bible
And when he saw one of them being mistreated, Moses went to his defense and avenged him by striking down the Egyptian who was oppressing him.

King James Bible
And seeing one of them suffer wrong, he defended him, and avenged him that was oppressed, and smote the Egyptian:

American Standard Version
And seeing one of them'suffer wrong, he defended him, and avenged him that was oppressed, smiting the Egyptian:

Darby Bible Translation
and seeing a certain one wronged, he defended [him], and avenged him that was being oppressed, smiting the Egyptian.

Douay-Rheims Bible
And when he had seen one of them suffer wrong, he defended him; and striking the Egyptian, he avenged him who suffered the injury.

English Revised Version
And seeing one of them suffer wrong, he defended him, and avenged him that was oppressed, smiting the Egyptian:

Young's Literal Translation
and having seen a certain one suffering injustice, he did defend, and did justice to the oppressed, having smitten the Egyptian;