In every chapter of Galatians there is a reference to the cross or of Christ, his crucifixion
1:4 (Jesus Christ) who gave himself for our sins to rescue us from the present evil age, according to the will of our God and Father
2:20 I have been crucified with Christ and I no longer live, but Christ lives in me. The life I now live in the body, I live by faith in the Son of God, who loved me and gave himself for me.
3:1, 13 You foolish Galatians! Who has bewitched you? Before your very eyes Jesus Christ was clearly portrayed as crucified. ... Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: “Cursed is everyone who is hung on a pole.”
4:4, 5 But when the set time had fully come, God sent his Son, born of a woman, born under the law, to redeem those under the law, that we might receive adoption to sonship.
5:11 Brothers and sisters, if I am still preaching circumcision, why am I still being persecuted? In that case the offense of the cross has been abolished.
6:12-14 Those who want to impress people by means of the flesh are trying to compel you to be circumcised. The only reason they do this is to avoid being persecuted for the cross of Christ. Not even those who are circumcised keep the law, yet they want you to be circumcised that they may boast about your circumcision in the flesh. May I never boast except in the cross of our Lord Jesus Christ, through which he world has been crucified to me, and I to the world.