The plague of death to the livestock effects Egypt but not Israel:
“Let my people go, that they may serve me. For if you refuse to let them go and still hold them, behold, the hand of the Lord will fall with a very severe plague upon your livestock that are in the field, the horses, the donkeys, the camels, the herds, and the flocks. But the Lord will make a distinction between the livestock of Israel and the livestock of Egypt, so that nothing of all that belongs to the people of Israel shall die.”’ 9:1-4The plague of oppressive felt darkness is darkness over Egypt but not over Israel - they remain in the light:
“Stretch out your hand toward heaven, that there may be darkness over the land of Egypt, a darkness to be felt.” So Moses stretched out his hand toward heaven, and there was pitch darkness in all the land of Egypt three days. They did not see one another, nor did anyone rise from his place for three days, but all the people of Israel had light where they lived. 10v21-23.And, when the LORD passes through in wrath, those homes with blood on the doors are spared but not the Egyptians:
‘It is the sacrifice of the Lord's Passover, for he passed over the houses of the people of Israel in Egypt, when he struck the Egyptians but spared our houses.’” 12:27The people of God are spared, not because they don't deserve judgement but because in his jealous love the LORD holds back wrath from them. We ask how can this be? Like all good questions the answer is Jesus. The tension is unresolved until wrath falls upon the Son who takes their place, dying in the dark, struck down, his blood on the doors of his people.
He does not act in exactly the same way towards everyone, he is a lover - and while anyone can become part of his people, not everyone is his people. Those who remain hard-hearted to him are not saved. But his grace finds out some, not because his people are better than everyone else but because his love is better than everything.