11 “This command I am giving you today is not too difficult for you, and it is not beyond your reach. 12 It is not kept in heaven, so distant that you must ask, ‘Who will go up to heaven and bring it down so we can hear it and obey?’ 13 It is not kept beyond the sea, so far away that you must ask, ‘Who will cross the sea to bring it to us so we can hear it and obey?’ 14 No, the message is very close at hand; it is on your lips and in your heart so that you can obey it. — Deut. 30:11-14 NLT
At this time, the Holy Spirit had not yet been given to us to remain on the earth until Jesus retruns, so God gave the Israelis their instructions and commands through Moses. In the following chapters of Deuteronomy, we read that God instructed Moses to write all of these instructions in a Book. That Book is now included as the first five books of the Bible. Moses instructed the priests to keep the Book of Instructions beside the Ark of the Covenant at all times as a sign of remembrance to the Israelis of their covenant with God. It would also serve as a witness against them in times of disobedience. It was to be read to the people, in its entirety, every seventh year during the Festival of Shelters. God is a just God and never holds anyone accountable for things they can not know. He can and does hold us responsible for those we could know but refuse to learn.
Now, since Jesus has returned to Heaven, He has sent the Holy Spirt to abide in us and lead us into all truth. We have no reason for our disobedience. We may try to excuse ourselves because of a lack of knowledge, but that excuse won’t hold water since God has made the Holy Spirit available to be our Teacher. His love for us and our love for Him is more than sufficient reason to study, learn and obey as much as we possibly can. The Lord, our God, is a jealous God and he is unhappy with anything less than a total commitment to our relationship with Him.
2 For I am jealous for you with the jealousy of God himself. I promised you as a pure bride to one husband—Christ. — 2 Cor. 11:2 NLT