Salvation comes through believing in Jesus Christ and asking for His forgiveness of our sins.
That if you confess with your mouth, "Jesus is Lord," and believe in your heart that God raised him from the dead, you will be saved. 10 For it is with your heart that you believe and are justified, and it is with your mouth that you confess and are saved. NIV
1 John 1:9
9 If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
1 Peter 2:9
9 But you are a chosen people, a royal priesthood, a holy nation, a people belonging to God, that you may declare the praises of him who called you out of darkness into his wonderful light.