Obey me, and keep my treaty and you should be to me like a tresure, and you should be to me a kingdom of princes and a holy nation
Rashi:וְעַתָּה: אִם עַתָּה תְקַבְּלוּ עֲלֵיכֶם, יֶעֱרַב לָכֶם מִכָּאן וָאֵילָךְ, שֶׁכָּל If now you accept upon yourselves the yoke of the commandments, it will be pleasant for you in the future, since all beginnings are difficult.
I must go tell the elders, everything I just heard from hashem
Anyone who touches the mountain will be put to death יגלֹֽא־תִגַּ֨ע בּ֜וֹ יָ֗ד כִּֽי־סָק֤וֹל יִסָּקֵל֙ אֽוֹ־יָרֹ֣ה יִיָּרֶ֔ה אִם־בְּהֵמָ֥ה אִם־אִ֖ישׁ לֹ֣א יִֽחְיֶ֑ה בִּמְשֹׁךְ֙ הַיֹּבֵ֔ל הֵ֖מָּה יַֽעֲל֥וּ בָהָֽר:
A Lesson is that hashem gives us clear instructions to do his commandments and we need to take it serious and listen closley and then hashem will grant us accsess to his rewards like matan torah and we will get hashems torah and finally be renited with moshiach now!