They might be judged according to human standards in regard to the body, but live according to God in regard to the spirit

1 Peter 4:1-6

Therefore, since Christ suffered in his body, arm yourselves also with the same attitude, because whoever suffers in the body is done with sin. As a result, they do not live the rest of their earthly lives for evil human desires, but rather for the will of God. For you have spent enough time in the past doing what pagans choose to do—living in debauchery, lust, drunkenness, orgies, carousing and detestable idolatry. They are surprised that you do not join them in their reckless, wild living, and they heap abuse on you. But they will have to give account to him who is ready to judge the living and the dead. For this is the reason the gospel was preached even to those who are now dead, so that they might be judged according to human standards in regard to the body, but live according to God in regard to the spirit.

Why?

Jesus is our example,  learn from Jesus with the same attitude for whoever suffers in the body is done with sin. Let us live for the will of God rather than live for evil human desires.

Everyone will be judged for their body, but live according to God with the spirit.

How?

All who trust in the Lord and walk in the way of God's word will be saved in the Spirit.