Before the cross we were sinners in need of God, through repentance and faith, and after the cross we were sinners in need of God.
What changed is no longer do we have to become Jews to find God, no longer are we bound by the religious duties and regulations of the temple. Written on our hearts is Gods love which if we obey and listen to it, we walking in communion with Christ and do His will.
The Kingdom of Heaven has come to earth in the body of His people, we now have to walk in it and live by the power of the Holy Spirit.
If we walk in the light as he is in the light we have fellowship with on another and the blood of Christ cleanses us from all sin.
Being open and honest about where we are in this spiritual walk is everything.
Sin is an addiction to illusions, dreams of men for lust, wealth, power, glory, fulfillment which we have not got today. Whenever we think we have achieved it, it is not their so have to get more sin to get the same emotional fix.
In Jesus we have everything, love, acceptance, forgiveness, wholeness, truth, honesty, integrity. There is no greater thing than to be called a friend of Jesus, His follower, worthy of the Lamb. Amen and praise to His glorious name.