For the LORD-Yehōvah (Messiah Pre-Incarnate) has poured out upon you the spirit of deep sleep, and has closed your eyes: the prophets and your rulers, the seers has He covered.Jer 51:39; Rom 11:8
The Lord has brought over you a deep sleep: He has sealed your eyes (the prophets); he has covered your heads (the seers).
OJBFor Hashem hath poured out upon you the ruach tardemah (spirit of deep sleep), and hath closed your eynayim; namely, that of the nevi'im and your heads, you seers, hath He covered.
T4TBecause Yahweh has prevented the prophets [DOU] from understanding and telling you his messages, it is as though he has caused you to be fast/deeply asleep.