What I tell you in the dark, speak in the daylight; what is whispered in your ear, proclaim from the roofs. 28 Do not be afraid of those who kill the body but cannot kill the soul. Rather, be afraid of the One who can destroy both soul and body in hell. 29 Are not two sparrows sold for a penny ? Yet not one of them will fall to the ground apart from the will of your Father. 30 And even the very hairs of your head are all numbered. 31 So don't be afraid; you are worth more than many sparrows. 32 "Whoever acknowledges me before men, I will also acknowledge him before my Father in heaven. 33 But whoever disowns me before men, I will disown him before my Father in heaven. 34 "Do not suppose that I have come to bring peace to the earth. I did not come to bring peace, but a sword. 35 For I have come to turn " 'a man against his father, a daughter against her mother, a daughter-in-law against her mother-in-law-- 36 a man's enemies will be the members of his own household.' 37 "Anyone who loves his father or mother more than me is not worthy of me; anyone who loves his son or daughter more than me is not worthy of me; 38 and anyone who does not take his cross and follow me is not worthy of me. 39 Whoever finds his life will lose it, and whoever loses his life for my sake will find it. "
Matthew 10:27-39 NIV
Jesus is making it clear that some people will believe and have Faith, some will not. Even in the same family.
But Jesus is more important than your family, and if they do not believe, leave them.
He also said:
"You must be on your guard. You will be handed over to the local councils and flogged in the synagogues. On account of me you will stand before governors and kings as witnesses to them. 10 And the gospel must first be preached to all nations. 11 Whenever you are arrested and brought to trial, do not worry beforehand about what to say. Just say whatever is given you at the time, for it is not you speaking, but the Holy Spirit. 12 "Brother will betray brother to death, and a father his child. Children will rebel against their parents and have them put to death. 13 All men will hate you because of me, but he who stands firm to the end will be saved."
Matthew 13:9-13 NIV