Acts 9:24

But their laying await was known of Saul. And they watched the gates day and night to kill him.
— Acts 9:24, King James Version

In other translations

World English Bible (WEB)

but their plot became known to Saul. They watched the gates both day and night that they might kill him,

American Standard Version (ASV)

but their plot became known to Saul. And they watched the gates also day and night that they might kill him:

Young's Literal Translation (YLT)

and their counsel against <FI>him<Fi> was known to Saul; they were also watching the gates both day and night, that they may kill him,