Luke 11:16
And others, tempting him, sought of him a sign from heaven.
Cross-references
Matthew 12:38 records the same demand for a sign from heaven to test Jesus, a parallel account.
Matthew 12:39 records Jesus' response rejecting the demand except for the sign of Jonah, a direct parallel.
Matthew 16:1-4 gives another account of the sign-seeking Pharisees, mirroring the same demand and Jesus' response.
Mark 8:11 similarly describes the Pharisees testing Jesus by asking for a sign from heaven.
In Mark 8:12, Jesus responds to the same demand for a sign with a refusal, deepening the understanding of his rejection of testing.
In 1 Corinthians 1:22, Paul notes that Jews demand signs, generalizing the behavior seen here.
In John 6:30, the crowd asks for a sign to believe, echoing the testing demand here though after a miracle.