What does Jesus mean when he says they have taken away the key of knowledge? The religious lawyers and scribes held the "office of the keys" since they were the official interpreters of the scriptures. Unfortunately their interpretation of the scriptures became so distorted and difficult to understand that others were "shut off" to the scriptures. They not only shut themselves to heaven; they also hindered others from understanding God's word. Through pride and envy, they rejected not only the prophets of old, but God's final prophet, the Lord Jesus Christ. Jesus is the "key of David" (see Isaiah 22:22; Revelations 3:7) who opens heaven to those who accept him as Lord and Savior. He is the "Wisdom of God" and source of everlasting life. Only the humble of heart – those who thirst for God and acknowledge his word as true – can truly understand this wisdom. [See Psalm 119:99ff: "I have more understanding than all my teachers, for your testimonies are my meditation."] God is ever ready to speak his word to us and to give us true wisdom and understanding.