4:10

days and months and seasons and years: Paul here refers to special occasions that God’s people were required to commemorate under the Mosaic Law. For example, there were the Sabbaths and sabbath years (Ex 20:8-10; Le 25:4, 8, 11), the new moon observances (Nu 10:10; 2Ch 2:4), the annual Day of Atonement (Le 16:29-31), the Passover (Ex 12:24-27), the Festival of Unleavened Bread (Le 23:6), the Festival of Weeks (Ex 34:22), and the Festival of Booths (Le 23:34). Each of these events took place at designated times. Some of the Christians in Galatia were formerly under the Mosaic Law and for many years had faithfully observed it. However, on learning of Christ’s ransom sacrifice, they happily accepted its benefits and the freedom from servitude to the Mosaic Law. (Ac 13:38, 39) Paul rightly feared for those who were again becoming enslaved to the Law and who were scrupulously commemorating those special occasions. (Ga 4:11) Likewise, if any Gentiles who became Christians returned to some of the religious observances from their pagan past, this would show a lack of faith in Christ’s ransom sacrifice.