If you are saved, it's by God's grace through faith in Christ (Ephesians 2:8-10). Your salvation is the eternal purpose and work of God the Father. Your salvation was purchased through the Son of God at the cross. Christ effectively works in you by the Holy Spirit.
God the Father chose to save you in Christ before the world began (Ephesians 1:4-6). God's eternal purpose in Christ was foreordained. God calls you through the gospel to be justified by faith in Christ. That's how God saves you through Christ.
God the Father works through His only begotten Son to save believers (John 3:16). Jesus accomplished the Father's will through His sacrificial death and resurrection. That is the gospel of your salvation in Christ (1 Corinthians 15:1-4). God the Father works through the Son to save all who believe.
The Holy Spirit applies salvation in you through Christ (Romans 8:9). "He who has begun a good work in you will complete unto the day of Jesus Christ" (Philippians 1:6). The Holy Spirit changes your life through faith in Christ. Believers are transformed by the Holy Spirit to walk in newness of life. If you are saved, it's through Jesus Christ our Lord (Romans 6:4, 12:2; 1 Corinthians 12:3).