'Flesh and Blood' in the Bible

And Jesus answered and said to him, Blessed are you, Simon, son of Jonas, for flesh and blood has not revealed this to you, but my Father in heaven.

But I say this, brothers, that flesh and blood cannot inherit the kingdom of God, nor shall destruction inherit indestructibleness.

was pleased to reveal his Son in me, that I might preach him among the gentiles, immediately I conferred not with flesh and blood,

for our conflict is not against flesh and blood, but against principalities, against powers, against the potentates of the darkness of this world, against the spiritual [hosts] of evil in the heavenly [worlds].