50 Heb “was found in it”; the referent (the city) has been specified in the translation for clarity.
51 Or “he delivered.” The verb וּמִלַּט (umillat, from מָלַט, malat, “to deliver”) is functioning either in an indicative sense (past definite action: “he delivered”) or in a modal sense (past potential: “he could have delivered”). The literal meaning of זָכַר (zakhar, “to remember”) in the following line harmonizes with the indicative: “but no one remembered that poor man [afterward].” However, the modal is supported by v. 16: “A poor man’s wisdom is despised; no one ever listens to his advice.” This approach must nuance זָכַר (“to remember”) as “[no one] listened to [that poor man].” Most translations favor the indicative approach: “he delivered” or “he saved” (, , , , , , , ); however, some adopt the modal nuance: “he might have saved” (, , margin).
52 Heb “remembered.”

In other versions

But there was found in it a poor, wise man, and he by his wisdom delivered the city. Yet no one remembered that poor man.

Now there lived in that city a man poor but wise, and he saved the city by his wisdom. But nobody remembered that poor man.

Now a poor wise man was found in the city, and he delivered the city by his wisdom. Yet no one remembered that poor man.

A poor, wise man knew how to save the town, and so it was rescued. But afterward no one thought to thank him.

Now, a poor wise man was found in it, and he delivered the city by his wisdom. But no one remembered that poor man.

Now there was found in it a poor wise man, and he by his wisdom delivered the city; yet no man remembered that same poor man.

Public Domain