We are talking about whether men can respond positively to GodDeut 30 has nothing to do with Salvation by Grace through Jesus Christ. It's to national Israel under a national earthly non spiritual covenant. You wasting spàce!
Deuteronomy 30:11–16 (ESV)
The Choice of Life and Death
11 “For this commandment that I command you today is not too hard for you, neither is it far off. 12 It is not in heaven, that you should say, ‘Who will ascend to heaven for us and bring it to us, that we may hear it and do it?’ 13 Neither is it beyond the sea, that you should say, ‘Who will go over the sea for us and bring it to us, that we may hear it and do it?’ 14 But the word is very near you. It is in your mouth and in your heart, so that you can do it.
15 “See, I have set before you today life and good, death and evil. 16 If you obey the commandments of the LORD your God that I command you today, by loving the LORD your God, by walking in his ways, and by keeping his commandments and his statutes and his rules, then you shall live and multiply, and the LORD your God will bless you in the land that you are entering to take possession of it.
John 12:40 (KJV 1900)
40 He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.
Matthew 13:15 (KJV 1900)
15 For this people’s heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
Total inability would make all those impossible
now are you going to deal with them ?