Rom 8:15 The Spirit you received does not make you slaves, so that you live in fear again; rather, the Spirit you received brought about your adoption to sonship. And by him we cry, “Abba, Father.”
You cry Abba Father. This is intimacy, it shows you have a close relationship to him; the closest. Only sons and daughters cry out Abba. This is like saying daddy. This shows trust and indicates security in the relationship. There is no fear.
This indicates love. It shows that you know he loves you and you love him. This is quite a gift. This isn’t for everyone. This isn’t a right given to all humanity but only a few. This for you because you have put your trust in Jesus, exhibited by your giving into the Spirit to love.
Worship him. Love in him in your words and deeds. Tell others how he is with you and how you love him. Thank him for all that he does, both the good and the difficult things. Never waiver knowing that he will never leave you nor forsake you.