9. Now, however, that you have come to be acquainted with and understand and know [the true] God, or rather to be understood and known by God, how can you turn back again to the weak and beggarly and worthless elementary things [of all religions before Christ came], whose slaves you once more want to become?
10. You observe [particular] days and months and seasons and years!
11. I am alarmed [about you], lest I have labored among and over you to no purpose and in vain.