Is it "not too hard" to avoid sin?
If anyone is without sin they can get into heaven. If anyone was to obey the law fully, not sinning even once they could earn their way into heaven. But no one can do that due to fallen human nature. It is impossible for anyone to earn their way to heaven because we are fallen. Thus came Christ and he was sinless and his sinlessness is imputed to us if we believe.
At least, that's a widely taught view.
But what then do we do with passages such as Deuteronomy 30 - where Moses announces that the law isn't too difficult to keep?
11 Surely, this commandment that I am commanding you today is not too hard for you, nor is it too far away. 12 It is not in heaven, that you should say, "Who will go up to heaven for us, and get it for us so that we may hear it and observe it?" 13 Neither is it beyond the sea, that you should say, "Who will cross to the other side of the sea for us, and get it for us so that we may hear it and observe it?" 14 No, the word is very near to you; it is in your mouth and in your heart for you to observe. 15 See, I have set before you today life and prosperity, death and adversity. 16 If you obey the commandments of the Lord your God that I am commanding you today, by loving the Lord your God, walking in his ways, and observing his commandments, decrees, and ordinances, then you shall live and become numerous, and the Lord your God will bless you in the land that you are entering to possess. 17 But if your heart turns away and you do not hear, but are led astray to bow down to other gods and serve them, 18 I declare to you today that you shall perish; you shall not live long in the land that you are crossing the Jordan to enter and possess. 19 I call heaven and earth to witness against you today that I have set before you life and death, blessings and curses. Choose life so that you and your descendants may live, 20 loving the Lord your God, obeying him, and holding fast to him; for that means life to you and length of days, so that you may live in the land that the Lord swore to give to your ancestors, to Abraham, to Isaac, and to Jacob. (Deut 30:11-20)
Is the law impossible to keep or isn't it? Moses seems to think it is eminently keepable... "it is not too hard for you" (30:11). In light of this is it reasonable to challenge some of the assumptions implicit in the statements of doctrine above? Should we strive to find ways of understanding Paul's thought that avoids contradiction with Moses?