1 John 2:1 But if anybody does sin, we have an advocate with the Father–Jesus Christ, the Righteous One.
For those who grieve their sin and have remorse, this is good news. These do not sin often or easily but anguish over theirs. These are looking and striving to walk in the Spirit and do his will and this promise is for them alone.
These receive abundant grace. The Father is pleased to extend mercy and Jesus calls on their behalf. Because of Jesus it is liberally given.
For these, you, receive your gift advocated by Christ for you. Thank him and run to your spiritual labor with confidence and continue in your pursuit of holiness extending this mercy as freely as it was given. Continue and finish your task. There is no time for bemoaning your sin. Thank him and rejoice that you have Jesus the faithful going before you.