לָכֵ֕ן כֹּ֥ה אֶעֱשֶׂה־לְּךָ֖ יִשְׂרָאֵ֑ל עֵ֚קֶב כִּֽי־זֹ֣את אֶֽעֱשֶׂה־לָּ֔ךְ הִכּ֥וֹן לִקְרַאת־אֱלֹהֶ֖יךָ יִשְׂרָאֵֽל׃
Therefore thus will I do unto thee, O Israel; Because I will do this unto thee, Prepare to meet thy God, O Israel.
Mesilat Yesharim
They further said (Shabbat 10a): "Rava would don a cloak and pray, saying: 'prepare to meet your G-d, O Israel' (Amos 4:12)".
Mesilat Yesharim
But, here too one needs to discern and make distinctions, for all this was said regarding the mitzvot themselves which we are completely obligated in. In those one should "set his face like flint" (Isaiah 50:7).
Mesilat Yesharim
These things can only be evaluated by one of understanding heart and sound intellect since it is impossible to clarify all their endless details, and "G-d gives wisdom; from His mouth comes knowledge and understanding" (Mishlei 2:6).