Luke 11:27
And it came to pass, as he spake these things, a certain woman of the company lifted up her voice, and said unto him, Blessed is the womb that bare thee, and the paps which thou hast sucked.
11:28
But he said, Yea rather, blessed are they that hear the word of God, and keep it.
With "Yea" He confirmed the veneration of His mother and then He proceeded to urge us to become like her through obedience to the Word of God.
This passage is the scriptural basis of Marian devotion.