Exodus 23:20-21

Conquest of Canaan Promised

20 aBehold, I send an angel before you to guard you on the way and to bring you to the place that I have prepared. 21Pay careful attention to him and obey his voice; bdo not rebel against him, cfor he will not pardon your transgression, for my name is in him.

Exodus 32:34

34 dBut now go, lead the people to the place about which I have spoken to you; ebehold, my angel shall go before you. Nevertheless, in the day when I visit, I will visit their sin upon them.”

Isaiah 63:9

9 fIn all their affliction he was afflicted,
Or  he did not afflict

and the angel of his presence saved them;
hin his love and in his pity he redeemed them;
ihe lifted them up and carried them all the days of old.
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