Galatians 4:9-11

AUV(i) 9 But now that you have come to know God [as your Father], or rather, to be known by Him [as His children], how can you turn back again to the weak, cheap, elementary teachings [of the law of Moses], to which you [seem to] desire to become enslaved? 10 You are observing [certain] days, and months, and seasons, and years [as binding religious holidays]. 11 I am afraid for you, [i.e., for your spiritual safety], that possibly I may have spent a lot of effort on your behalf for nothing.