How do we know that Christ is holy and good?

In Mark 10:18, Jesus questions the rich young ruler on his use of the term 'good,' stating, 'There is none good but one, that is, God.' This declaration affirms the unique holiness and goodness of Christ, identifying Him as divine. Throughout Scripture, the holiness of God is evident in His actions, character, and the perfect fulfillment of the law by Christ. By establishing this truth, Jesus directs the young ruler—and us—to understand that true goodness is found only in Him, pointing to the necessity of divine grace for salvation.