'Flesh and Blood' in the Bible

And Jesus responding said to him, Blessed art thou, Simon the son of Jonah: because flesh and blood did not reveal it to thee, but my Father who is in the heavens.

But I say this, brethren, that flesh and blood are not able to inherit the kingdom of God; neither does corruption inherit incorruption.

to reveal his Son in me, that I might preach him among the Gentiles; immediately I conferred not with flesh and blood: