Genesis 27:19
BIB: אָנֹכִי֙ עֵשָׂ֣ו בְּכֹרֶ֔ךָ עָשִׂ֕יתִי כַּאֲשֶׁ֥ר
NAS: I am Esau your firstborn; I have done
KJV: I [am] Esau thy firstborn; I have done
INT: I am Esau your firstborn have done you

Exodus 4:23
BIB: אֶת־ בִּנְךָ֖ בְּכֹרֶֽךָ׃
NAS: your son, your firstborn.'
KJV: thy son, [even] thy firstborn.
INT: will kill your son firstborn