"Behold, children are a gift of the Lord;
The fruit of the womb is a reward.
Like arrows in the hand of a warrior,
So are the children of one's youth.
How blessed is the man whose quiver is full of them..."
"Do you think that I came to cast peace on the earth? I did not come to bring peace, but a sword. I came to set a man against his father, and a daughter against her mother, and a daughter-in-law against her mother-in-law; and a man's enemies will be the members of his household. He who loves father or mother more than Me is not worthy of Me, and he who loves son or daughter more than Me is not worthy of Me. And he who does not take his cross and follow after Me is not worthy of Me."
"Now great multitudes were going along with Him; and He turned to them and said: 'If anyone comes to Me, and does not hate his own father and mother and wife and children and brothers and sisters, yes, and even his own life, he cannot be My disciple. Whoever does not carry his own cross and come after Me cannot be My disciple.'"
"While He was still speaking to the multitudes, behold His mother and His brothers were standing outside, seeking to speak to Him. And someone said to Him, 'Behold, Your mother and Your brothers are standing outside to seeking to speak to You.'
But He answered the one who was telling Him and said, 'Who is My mother and My brothers?' And stretching out His hand toward His disciples, He said, 'Behold My mother and My brothers! For whoever shall do the will of My Father who is in heaven, he is My brother and sister and mother.'"
And could Jesus be ashamed of us, ashamed to call us "brethren"?
"For it was fitting for Him, for whom are all things, and through whom are all things, in bringing many sons to glory, to perfect the author of their salvation through sufferings. For both He who sanctifies and those who are being sanctified are all from one Father; for which reason He is not ashamed to call them brethren..."
Hebrews 2:10, 11