What does 'Son of David' mean? Why is the healing of blindness so significant? Did Jesus have His own house to stay at Capernaum? Do the Dead Sea Scrolls point to Jesus? Why were the Pharisees so blinded?

Matthew 9:27-31

And when Jesus departed thence, two blind men followed him,
crying, and saying, Thou Son of David, have mercy on us.

And when he was come into the house, the blind men came to him: and Jesus saith unto them, Believe ye that I am able to do this? They said unto him, Yea, Lord.

Then touched he their eyes, saying, According to your faith be it unto you.

And their eyes were opened; and Jesus straitly charged them, saying, See that no man know it.

But they, when they were departed, spread abroad his fame in all that country.