Acts 23:21

Therefore do not be persuaded by them: for more than forty of them lie in wait for him, who have obligated themselves by an oath, neither to eat nor drink until they may kill him: and now they are ready, awaiting the promise from you.

Acts 23:12-14

And it being day, the Jews having formed a conspiracy, obligated themselves by an oath, saying that they would neither eat nor drink until they might kill Paul.

Acts 9:23-24

And when many days were being filled up, the Jews issued a verdict to kill him:

Acts 14:5-6

And when there was a conspiracy of both Gentiles and Jews along with their leaders, to insult and stone them,

Acts 20:19

serving the Lord with all humility, and tears, and temptations, which came upon me through the plots of the Jews:

Acts 25:3

asking favor against him, in order that he might send him to Jerusalem, making a plot to kill him on the road.

Romans 9:3

For I would pray, that I myself might be an offering from Christ; in behalf of my brethren, my kindred according to the flesh:

2 Corinthians 11:26

Often in journeys, in perils of rivers, in perils of robbers, in perils from my own race, in perils from the Gentiles, in perils in the city, in perils in the wilderness, in perils in the sea, in perils among false brethren;

2 Corinthians 11:32-33

In Damascus Areta the governor of the king, guarded the city of the Damascenes, to arrest me:

Treasury of Scripture Knowledge

Summary

But do not thou yield unto them: for there lie in wait for him of them more than forty men, which have bound themselves with an oath, that they will neither eat nor drink till they have killed him: and now are they ready, looking for a promise from thee.

Bible References

For

Acts 23:12
And it being day, the Jews having formed a conspiracy, obligated themselves by an oath, saying that they would neither eat nor drink until they might kill Paul.
Acts 9:23
And when many days were being filled up, the Jews issued a verdict to kill him:
Acts 14:5
And when there was a conspiracy of both Gentiles and Jews along with their leaders, to insult and stone them,
Acts 20:19
serving the Lord with all humility, and tears, and temptations, which came upon me through the plots of the Jews:
Acts 25:3
asking favor against him, in order that he might send him to Jerusalem, making a plot to kill him on the road.
2 Corinthians 11:26
Often in journeys, in perils of rivers, in perils of robbers, in perils from my own race, in perils from the Gentiles, in perils in the city, in perils in the wilderness, in perils in the sea, in perils among false brethren;

An oath

Acts 23:14
who, having come to the chief priests and elders, said, We have anathematized ourselves with an anathema, to taste nothing until we may kill Paul.
Romans 9:3
For I would pray, that I myself might be an offering from Christ; in behalf of my brethren, my kindred according to the flesh: