Exodus 3:2

3:2 The angel of the Lord appeared to him in a flame of fire from within a bush. He looked – and the bush was ablaze with fire, but it was not being consumed!

Exodus 14:19

14:19 The angel of God, who was going before the camp of Israel, moved and went behind them, and the pillar of cloud moved from before them and stood behind them.

Exodus 23:23

23:23 For my angel will go before you and bring you to the Amorites, the Hittites, the Perizzites, the Canaanites, the Hivites, and the Jebusites, and I will destroy them completely.

Exodus 32:34

32:34 So now go, lead the people to the place I have spoken to you about. See, my angel will go before you. But on the day that I punish, I will indeed punish them for their sin.”