Romans 8:15-17

"(v15); " ... did not receive a spirit that makes you a slave again to fear but you received a spirit of sonship and by Him we cry "Abba! Father!". The Spirit Himself testifies with our spirit ...".

The Holy Spirit is telling you that you are a son of the Father and is in you and through you is crying; "Abba! Daddy! Father!".

(v17); "If we are children then we are heirs - heirs of God and co-heirs". Co-heir is an equal heir. "with Christ". (v19); "For the sons of God to be revealed". It didn't say that the world is waiting for Christians to be revealed but for sons to be revealed - led by the Spirit who only do what they see the Father doing and are not led by circumstances".

Reference: Rob Rufus - "Sonship vs Christianity" - City Church International, Hong Kong - Sunday 30th November 2008.