Treasury of Scripture Knowledge
That as sin hath reigned unto death, even so might grace reign through righteousness unto eternal life by Jesus Christ our Lord.
For we have all received from His full richness one favor after another.
For God's unearned favor has appeared, bringing salvation to all people [i.e., in the coming of Christ].
So, we should approach, with confidence, God's throne of unearned favor, so we can receive mercy and obtain that favor to help us when we need it.
1 Peter 5:10
And the God who bestows every unearned favor [upon His people], who invited you to partake of His eternal splendor through Christ Jesus, will restore, confirm, strengthen and stabilize you people [in the faith], after you have gone through a brief time of suffering.
For if [physical] death ruled [over mankind] because of the sin of the one man [i.e., Adam], how much more will those who receive the abundance of God's unearned favor, and the gift of being right with Him, rule in [never ending] life through the one man, Jesus Christ.
For it was not through [obedience to] law [See 3:31] that the promise to Abraham or his descendants of inheriting [the best of] the world [was made], but through their being considered righteous because of faith [in God].
And if Christ lives in your hearts, even though the body is [doomed to] death because of [Adam's ?] sin; yet the spirit is [destined to] live [forever] because of being [made] right with God. [Note: Some take "spirit" here to be "Spirit" and make it "The Holy Spirit gives you life." See next verse].
2 Peter 1:1
[This letter is being written by] Simon Peter, a slave and apostle of Jesus Christ, to those who have received a faith just as precious as ours, through the righteousness of our God and Savior Jesus Christ.
But many will be last [i.e., in importance and blessings] who [seem to] be first, and those [who seem to be] first will [end up] being last."
1 John 2:25
And this is the promise which Christ [or, "God"] has given to us: [It is] never ending life. [Note: This passage may mean that God promised us "the Eternal Life," that is, Christ, See John 3:16].