en_tn/deu/32/28.md

Moses speaks a poetic song to the people of Israel. Moses continues to use parallelism to emphasize what he is saying. (See: rc://en/ta/man/translate/figs-parallelism)

Oh, that they were wise, that they understood this, that they would consider their coming fate

Moses states something that he wishes were true, but he knows that it is not. (See: rc://en/ta/man/translate/figs-hypo)

they understood this...consider their coming fate

This means that if they had wisdom they would understand that their disobedience will cause Yahweh to bring these disasters on them.