Jesus connects their disbelief to something deeper than just a lack of information. What is it?
The most profound part of Jesus's response is His explanation for their persistent disbelief: 'But you do not believe because you are not of my sheep' (John 10:26). This statement cuts to the core of the issue. Their problem isn't a lack of evidence or a need for plainer words; it's a fundamental condition of their hearts.
Jesus distinguishes between those who are His 'sheep'—those who hear His voice, follow Him, and are given eternal life—and those who are not. He explains that true belief isn't simply intellectual assent but a spiritual reception that comes from God. Those who are truly His 'hear' His voice and recognize it, while others, hardened by pride, worldly desires, or resistance to His divine nature, remain deaf to His call. Their unbelief isn't an accident; it's a symptom of a heart not yet surrendered to Him.