Let me ask you only this: Did you receive the Spirit by works of the law or by hearing with faith? Are you so foolish? Having begun by the Spirit, are you now being perfected by the flesh? (Galatians 3:2-3 ESV)
Paul was dealing with the church in Galatia that was forgetting where they had come from. They were starting to follow the Jewish teachers who were teaching that Christians had to obey the Law of Moses, observe religious festivals, and follow dietary restrictions just like the Israelites did. They had forgotten that they were saved by faith alone through God’s grace (Ephesians 2:8).
We must always remember where we came from as followers of Jesus Christ and never stray from our roots. The grace of God is the essence of our walk with Jesus. We can do nothing on our own to earn his favor. As years of putting our faith in Jesus alone go by, we tend to forget this and focus on our deeds instead of the work of Jesus. Let it not be so with you.