How do we know Jesus' teachings about servanthood are true?

In Mark 10:45, Jesus declares, 'For even the Son of Man came not to be ministered unto, but to minister, and to give his life a ransom for many.' This statement not only encapsulates His mission but also serves as the ultimate illustration of servanthood. Throughout His ministry, Jesus demonstrated selfless love and service, culminating in His sacrificial death on the cross. His willingness to serve rather than be served provides a compelling basis for His teachings, showing that true greatness in God's kingdom is about humility and service to others, rather than seeking personal glory.