She was my firstborn.

她是我的长女。

《柯林斯英汉双解大词典》

Then say to Pharaoh, 'This is what the Lord says: Israel is my firstborn son

你要对法老说：‘耶和华这样说：以色列是我的儿子，我的长子。

youdao

Reuben, you are my firstborn, my might, the first sign of my strength, excelling in honor, excelling in power.

流便哪，你是我的长子，是我力量强壮的时候生的，本当大有尊荣，权力超众。

youdao

So in Exodus 4:22, Yahweh tells Moses to say to Pharaoh "Thus says the Lord, 'Israel is my firstborn son.

所以在《出埃及记》第四章第22节中，耶和华让摩西告诉法老,“犹太人是我的长子“

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