Paul closes most of his letters with a reference to grace (for example, Romans 16:20; 1 Corinthians 16:23; Philippians 4:23). In context, it is a prayer wish, 1 a desire for God to be with the Galatians, caring for them, and working all things for their good.
18 The grace of our Lord Jesus Christ be with your spirit, brothers. Amen.