'After The Flesh' in the Bible

Such then being my intention, did I indeed change it with levity? or the things which I purpose, do I purpose after the flesh, that with me there should be yea, yea, and nay, nay?

Wherefore from the present moment know we no man after the flesh: yea though we have also known Christ after the flesh, yet so henceforth know we him no more.

But I pray, that when I am present I may not be bold with the confidence with which I purpose to act resolutely against some who think of us, as if we walked after the flesh.

For though we walk in the flesh, we war not after the flesh:

Seeing many boast themselves after the flesh, I will boast also.