'Fleshly' in the Bible

For this is our confidence: The testimony of our conscience is that we have conducted ourselves in the world, and especially toward you, with God-given sincerity and purity, not by fleshly wisdom but by God’s grace.

I beg you that when I am present I will not need to be bold with the confidence by which I plan to challenge certain people who think we are behaving in an unspiritual way.

For though we live in the body, we do not wage war in an unspiritual way,

since the weapons of our warfare are not worldly, but are powerful through God for the demolition of strongholds. We demolish arguments