Jesus says: “It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life” (John 6:63).
“This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh. And they that are Christ’s have crucified the flesh with the affections and lusts. If we live in the Spirit, let us also walk in the Spirit” (Galatians 5:16, 24-25).
“There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit” (Romans 8:1).