What is the meaning of Acts 23:12-15?

12 And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul. 13 And they were more than forty which had made this conspiracy. 14 And they came to the chief priests and elders, and said, We have bound ourselves under a great curse, that we will eat nothing until we have slain Paul. 15 Now therefore ye with the council signify to the chief captain that he bring him down unto you to morrow, as though ye would enquire something more perfectly concerning him: and we, or ever he come near, are ready to kill him. (Acts 23:12-15 KJV)

William Burkitt’s Commentary

Observe here, 1. A barbarous and bloody plot, a cursed combination and conspiracy, against the life of the innocent and useful apostle: no sooner was it daylight, but the wicked Jews bind themselves by an oath, never to eat or drink more, until they eat the apostle’s flesh, and drink his blood. Thus the wicked plotteth against the just, and gnasheth upon him with his teeth, Ps 37:12.

Observe, 2. The numbers which were engaged in this conspiracy: more than forty, they all agreed as one man.

Lord, how numerous, how unanimous, how resolute and outrageous, are the enemies of thy holy religion, to carry on their cursed contrivances for the extirpation of it!

Thus it was here; these enemies were numerous,  more than forty. The devil’s designs never miscarry for want of fit instruments: he has a party ever ready to oppose the gospel in every place.

And as they were unanimous, as well as numerous, they combined together in one cursed bond: here was unity, but not a unity in the truth, but a conspiracy against it; here was the agreement and friendship, but it was like that of Herod and Pilate against Christ, and not for him; and they were resolute and outrageous,  They bound themselves under a curse, under a bloody vow, to pursue their purpose of murdering the apostle. It has been the old policy of the enemies of the church to oblige and bind themselves by oaths and execrations, by leagues and associations, to carry on their wicked and bloody designs against the church.  They were more than forty which made this conspiracy.

Observe, 3. The quality of the persons who were engaged in this bloody purpose: they were the Sadducees, who denied the immortality of the soul, and a life after death. And they apply themselves to the high priest and Sanhedrin or great council, not doubting of his and their readiness to join with them.

Oh, what a low ebb was the Jewish religion now at! What a high priest and priesthood was there that must head a conspiracy of murdering Sadducees! How great was the degeneracy of the Jewish church, when their chief priests were thus ready to comply with and contribute their best assistance to such a cruel crew of cut-throats and bloody assassins! But they had almost filled up the measure of their sins and their final destruction was near approaching.

Observe, lastly, What craft and cruelty, what fraud and force, are here found and combined together in the church’s enemies. The council must court the Roman captain that he bring down his prisoner,  as though they would enquire something more perfectly concerning him. Thus was the plot against the apostle’s life laid craftily as well as cruelly: under a pretence of having the prisoner re-examined, they contrive to have him brought down from the castle, and on his way to the council they would combine together for his destruction.

Lord, abate the power of the church’s enemies, since their malice cannot be abated!