"For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek." (Romans 1:16)
The great theme of "salvation" (Greek soteria, Hebrew yeshua) is prominent in both Old and New Testaments. It basically means "deliverance" and can be used for local and specific "deliverances" from perils, as well as for the eternal deliverance of one’s soul. In the latter sense, it is used for deliverance from the penalty of sin, from the power of sin in daily life, and from the very presence of sin in the future life.
Salvation, of course, is found only through the Lord Jesus Christ, whose very coming into the world was to "save his people from their sins" (Matthew 1:21). The name Jesus means "salvation." In fact, His name really was Yeshua, the word which often is translated "salvation" in the Old Testament. Devout Simeon, after waiting for many years, took the infant Jesus in his arms, exclaiming by the Spirit, "mine eyes have seen thy salvation" (Luke 2:30).
The theme of salvation is "so great" (Hebrews 2:3), it embraces many major doctrines of Scripture. As a very sketchy summary, one may note that it includes the doctrines of atonement (Leviticus 17:11); of substitution (Isaiah 53:5); of imputation (Romans 4:6-8); propitiation (1 John 2:2); redemption (1 Peter 1:18); remission (Acts 10:43); justification (Romans 3:28); adoption (Ephesians 1:5); reconciliation (Romans 5:10, 11); regeneration (Titus 3:5); sanctification (Hebrews 10:9- 10); and glorification (Romans 8:30). When a person is saved, the blessings implied in every one of these great doctrines of salvation become his, whether Jew or Gentile, whether found in Old Testament prophecy or New Testament fulfillment. No wonder Paul was not ashamed of this great gospel of salvation through Jesus Christ, and neither should we be! HMM