Respond to God is stronger even than family ties.

Matthew 12:38-50
Jesus will be three days and three nights in the heart of the earth, like Jonah threes and three nights in the belly of a huge fish.
Jesus is greater than Jonah, Solomon.
The final condition of that man is worse than the first. That is how it will be with this wicked generation. Who asked for miraculous signs. This is a wicked and adulterous generation.
Whoever does the will of my Father in heaven is my brother and sister and mother.
The lawyers and Pharisees want to see Jesus do a miracle - a 'sign' that will bear out his claims. But he will not perform for their benefit. One sign only will be given - Jesus' resurrection from the dead: the incontrovertible proff that his message is true; that he is who he claims to be.
Why?
Jesus said what he will be about his dead, but no one understood it.
Jesus did many miracles but someone wanted to see these to prove the rumor about Jesus. But Jesus rejected them, Jesus is not the magician, who is the Son of God. Good news of eternal life is more important than healing.
The story is a warning to those who have repented and made the 'about-turn' in their lives as a result of what they have seen and heard. Unless they take the further step of wholehearted commitment, they are in grave danger.
Jesus' apparent lack of filial respect would have shocked his hearers, as he no doubt intended. He is making the point that the bond between those who respond to God is stronger even than family ties.
How?
Do what I have heard and then could be real Christian. Respond to God is stronger even than family ties.