Romans 8:12

10 But if Christ is in you, your body is dead because of sin, yet your spirit is alive because of righteousness.

11 And if the Spirit of Him who raised Jesus from the dead is living in you, He who raised Christ Jesus from the dead will also give life to your mortal bodies through His Spirit, who lives in you.

Therefore, brothers, we have an obligation, but it is not to the flesh, to live according to it.

13 For if you live according to the flesh, you will die; but if by the Spirit you put to death the deeds of the body, you will live.

14 For all who are led by the Spirit of God are sons of God.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Therefore, brothers, we have an obligation, but it is not to the flesh, to live according to it.
KJV
Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
WEB
So then, brothers, we are debtors, not to the flesh, to live after the flesh.
ASV
So then, brethren, we are debtors, not to the flesh, to live after the flesh:
DARBY
So then, brethren, we are debtors, not to the flesh, to live according to flesh;
BLB
So then, brothers, we are debtors, not to the flesh, to live according to the flesh.
ÅB
Derfor, brødre, står vi ikke i gjeld til kjøttet, så vi skulle leve etter det.
OTB
Derfor, brødre og søstre, har vi en forpliktelse, men den er ikke til kjødet, for å leve etter det—
B1930
Derfor, brødre, står vi ikke i gjeld til kjødet, så vi skulde leve efter kjødet;

Study notes (Tyndale)

Original text and word study

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