'Of the Flesh' in the Bible

Howbeit ye know that, by reason of a weakness of the flesh, I myself announced the glad-message unto you, formerly;

But, just as, then, he that after the manner of the flesh had been born, did persecute him who had been born after the manner of the Spirit, thus, also now.

Manifest, however, are the works of the flesh, which, indeed, are - fornication, impurity, wantonness,

Because, he that soweth into his own flesh, out of the flesh, shall reap corruption, whereas, he that soweth into the Spirit, out of the Spirit, shall reap age-abiding life.