'According to the Flesh' in the Bible

What shall we say then that Abraham our father found according to the flesh?

that the righteous ordinance of the law may be performed by us who walk not according to the flesh, but according to the spirit.

For they who are according to the flesh mind the things of the flesh, but they who are according to the spirit the things of the spirit;

Therefore, brothers, we are debtors not to the flesh to live according to the flesh.

For if you live according to the flesh, you shall die; but if by the spirit you kill the deeds of the body, you shall live.

for I have wished that I was myself accursed from Christ for my brothers, my kindred according to the flesh,

whose are the fathers, and of whom is Christ, according to the flesh. He who is over all is God blessed forever, amen.