It's Deuteronomy vs Acts
In the Old Testament book Deuteronomy, God says his Law isn’t too hard for people.
But wait a minute!
In the New Testament Book of Acts, the apostle Peter says that the Law is too hard.
Deuteronomy says the Law isn’t too hard to obey
Deuteronomy 29:29 He has revealed his Law, and we and our descendants are to obey it forever. ... 30:11 The command [Law] that I am giving you today is not too difficult or beyond your reach. 12 It is not up in the sky. You do not have to ask, “Who will go up and bring it down for us, so that we can hear it and obey it?” 13 Nor is it on the other side of the ocean. You do not have to ask, “Who will go across the ocean and bring it to us, so that we may hear it and obey it?” 14 No, it is here with you. You know it and can quote it, so now obey it.
But Peter claims that the Law is too hard
Acts 15:5 Some of the [Christian] believers who belonged to the party of the Pharisees stood up and said, "The Gentiles must be circumcised and told to obey the Law of Moses." ... 7 Peter stood up and said ... 10 Why do you now want to put God to the test by laying a load [the Law] on the backs of the believers which neither our ancestors nor we ourselves were able to carry?
Recap: God and Peter don’t see eye to eye here. And elsewhere in the Bible, people complain that the Law is too big a burden. Yes, God says the Law isn't too tough to obey. But the chosen people and Peter say it is. Thus Deuteronomy vs Acts.