Exodus 6:6

(6) I will redeem you.—The idea of God purchasing, or redeeming, Israel is here brought forward for the first time. Later on we learn that the redemption was accomplished in a twofold way—(1) by the long series of wonders, culminating in the tenth plague, whereby they were taken out of Pharaoh’s hand, and ceased to be his slaves, becoming instead the servants of God; and (2) by being led through the Red Sea, and thus delivered, one and all, from impending death, and so purchased anew. (See Exodus 15:13-16.) The delivery from Pharaoh typified our deliverance from the power of Satan; the bringing forth from Egypt our deliverance from the power of sin.

With a stretched out arm.—See the comment on Exodus 3:20.

Witn great judgments. – That the “wonders” to be performed would also be “judgments” is here first declared plainly, though previously hinted at (Exodus 3:20; Exodus 4:23). In Genesis God had said that he would “judge” the nation which should afflict Israel (Genesis 15:14), but not that he would do so miraculously.