Acts 23:12-14 provides the earlier account of the same oath-bound conspiracy to kill Paul.

Acts 23:14 records the same 40+ men binding themselves with an oath to kill Paul. This is the source of the plot mentioned in verse 21.

Acts 20:19 notes the 'plots of the Jews' as a constant trial in Paul's ministry, as seen here.

Acts 25:3 describes another Jewish ambush planned against Paul, mirroring this one.

Acts 9:23 shows an earlier Jewish plot to kill Paul in Damascus, similar to this one.

Acts 9:24 reveals the earlier plot was discovered; here too the ambush is reported to the tribune.

Acts 14:6 shows Paul fleeing from a plot; here the plot is foiled by reporting.

Acts 14:5 records a Jewish and Gentile attempt to mistreat Paul, paralleling the current plot.

2 Corinthians 11:26 lists 'perils from my own countrymen,' directly matching the Jewish plot here.

Numbers 35:20 describes lying in wait to murder someone — exactly what the 40 men are doing to Paul. Direct verbal and thematic parallel.

Numbers 30:2 states that a man must keep his vows. The 40 men's oath to kill is a twisted application of this principle.

Deuteronomy 23:23 commands keeping voluntary vows to the LORD. The 40 men made a voluntary oath, but for murder — contrasting the law's intent.

Romans 9:3 has Paul wishing to be accursed for his people — a stark contrast to these men binding themselves by an oath to murder him.

Nehemiah 4:11 relates enemies plotting to kill Nehemiah's workers. Both involve secret murder plots, but no oath in Nehemiah.