1 My little children, I am writing these things to you so that you may not sin. But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous.2 He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.
1 Timothy 2
5 For there is one God, and there is one mediator between God and men, the man Christ Jesus,
Hebrews 9
15 Therefore he is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant.