20 When they heard this, they praised God. Then they said to Paul: “You see, brother, how many thousands of Jews have believed, and all of them are zealous for the law.

Read Acts 21:20 Using Other Translations

And when they heard it, they glorified the Lord, and said unto him, Thou seest, brother, how many thousands of Jews there are which believe; and they are all zealous of the law:
And when they heard it, they glorified God. And they said to him, "You see, brother, how many thousands there are among the Jews of those who have believed. They are all zealous for the law,
After hearing this, they praised God. And then they said, “You know, dear brother, how many thousands of Jews have also believed, and they all follow the law of Moses very seriously.