A common misinterpretation is to view this verse as a blanket condemnation of all requests for signs, ignoring Jesus' own provision of many miracles and his fulfillment of prophecies as signs elsewhere; it is not prohibiting earnest seeking of confirmation but critiquing skeptical 'tempting' that dismisses clear evidence, such as his exorcisms, in favor of demanding personalized spectacles, which Jesus rebukes in the following verses by affirming no sign will be given except Jonah's—a reference to his resurrection.
Luke 11:16
King James Version (1769)
16 And others, tempting him, sought of him a sign from heaven.
Luke 11:16 highlights the persistent unbelief among some in Jesus' audience, who, despite witnessing his exorcisms, demanded a 'sign from heaven' to test him rather than responding in faith to the evident power of God at work through him; this reveals a deeper spiritual resistance where miracles alone do not compel genuine belief, underscoring the need for humble recognition of Jesus' divine authority as already demonstrated.