Only the greatest of heroes give up their lives for others, to save them. Jesus being the most prominent. We must be like him. How do we die for others, to save them?

Rom. 6:4 Therefore we have been buried with Him through baptism into death, so that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life.

Rom. 6:6 knowing this, that our old self was crucified with Him, in order that our body of sin might be done away with, so that we would no longer be slaves to sin;

1Pet. 4:2 so as to live the rest of the time in the flesh no longer for the lusts of men, but for the will of God.
1Pet. 4:3 For the time already past is sufficient for you to have carried out the desire of the Gentiles, having pursued a course of sensuality, lusts, drunkenness, carousing, drinking parties and abominable idolatries.

Eph. 4:22 that, in reference to your former manner of life, you lay aside the old self, which is being corrupted in accordance with the lusts of deceit,

Col. 3:5 ¶ Therefore consider the members of your earthly body as dead to immorality, impurity, passion, evil desire, and greed, which amounts to idolatry.
Col. 3:6 For it is because of these things that the wrath of God will come upon the sons of disobedience,
Col. 3:7 and in them you also once walked, when you were living in them.
Col. 3:8 But now you also, put them all aside: anger, wrath, malice, slander, and abusive speech from your mouth.
Col. 3:9 Do not lie to one another, since you laid aside the old self with its evil practices,
Col. 3:10 and have put on the new self who is being renewed to a true knowledge according to the image of the One who created him—

2Pet. 1:4 For by these He has granted to us His precious and magnificent promises, so that by them you may become partakers of the divine nature, having escaped the corruption that is in the world by lust.
2Pet. 1:5 Now for this very reason also, applying all diligence, in your faith supply moral excellence, and in your moral excellence, knowledge,
2Pet. 1:6 and in your knowledge, self-control, and in your self-control, perseverance, and in your perseverance, godliness,
2Pet. 1:7 and in your godliness, brotherly kindness, and in your brotherly kindness, love.
2Pet. 1:8 For if these qualities are yours and are increasing, they render you neither useless nor unfruitful in the true knowledge of our Lord Jesus Christ.
2Pet. 1:9 For he who lacks these qualities is blind or short-sighted, having forgotten his purification from his former sins.

1John 2:6 the one who says he abides in Him ought himself to walk in the same manner as He walked.

When people act like Jesus, they give example and point others to repentance, to God and salvation.