'According to the Flesh' in the Bible

concerning his Son, who was born of the seed of David according to the flesh,

What then will we say that Abraham, our forefather, has found according to the flesh?

There is therefore now no condemnation to those who are in Christ Jesus, who don't walk according to the flesh, but according to the Spirit.

For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit, the things of the Spirit.

For I could wish that I myself were accursed from Christ for my brothers' sake, my relatives according to the flesh,