(a) Rom 8:1 walk not after the flesh:
"That the righteousness of the law might be fulfilled in us,  who walk not after the flesh, but after the Spirit." (Romans 8:4)
"[This] I say then, Walk in the Spirit, and ye shall not fulfill the lust of the flesh." (Galatians 5:16)
"If  we  live  in the Spirit, let us also walk  in  the  Spirit." (Galatians 5:25)