Forgotten

They distort words from their places and neglect much of what they were commanded. You will always find treachery among them, except for a few.

5:13And because of their breaking their covenant, We have cursed them and made hard their hearts. They change words from their context and forget a part of that whereof they were admonished. Thou wilt not cease to discover treachery from all save a few of them. But bear with them and pardon them. Lo! Allah loveth the kindly.

We took a covenant from those who said, “We are Christians,” but they too forgot much of what they were taught.

5:14And with those who say: "Lo! we are Christians," We made a covenant, but they forgot a part of that whereof they were admonished. Therefor We have stirred up enmity and hatred among them till the Day of Resurrection, when Allah will inform them of their handiwork.