26 I defiled them through their gifts—the sacrifice of every firstborn—that I might fill them with horror so they would know that I am the LORD.’

Read Ezekiel 20:26 Using Other Translations

And I polluted them in their own gifts, in that they caused to pass through the fire all that openeth the womb, that I might make them desolate, to the end that they might know that I am the LORD.
and I defiled them through their very gifts in their offering up all their firstborn, that I might devastate them. I did it that they might know that I am the LORD.
I let them pollute themselves with the very gifts I had given them, and I allowed them to give their firstborn children as offerings to their gods—so I might devastate them and remind them that I alone am the LORD .