Paul an apostle—sent neither by human commission nor from human authorities, but through Jesus Christ and God the Father, who raised him from the dead—and all the members of God’s family who are with me, To the churches of Galatia: Grace to you and peace from God our Father and the Lord Jesus Christ, who gave himself for our sins to set us free from the present evil age, according to the will of our God and Father, to whom be the glory forever and ever. Amen. I am astonished that you are so quickly deserting the one who called you in the grace of Christ and are turning to a different gospel—not that there is another gospel, but there are some who are confusing you and want to pervert the gospel of Christ. But even if we or an angel from heaven should proclaim to you a gospel contrary to what we proclaimed to you, let that one be accursed! As we have said before, so now I repeat, if anyone proclaims to you a gospel contrary to what you received, let that one be accursed! Am I now seeking human approval, or God’s approval? Or am I trying to please people? If I were still pleasing people, I would not be a servant of Christ. For I want you to know, brothers and sisters, that the gospel that was proclaimed by me is not of human origin; for I did not receive it from a human source, nor was I taught it, but I received it through a revelation of Jesus Christ. (Galatians 1:1-12, NRSV)
How easy is it to go back to old ways?
It is really easy, and not what we are supposed to do. Christ called us away from the old ways, into the new covenant.
There is no other good news for us, then Jesus, who died for us, and rose again to set all of us free from anything that might enslave us to serve God and others.
We can not look back, but must continue to focus on Jesus.