In manibus portabunt* (?)

It is very likely that the present chant incipit is is a scribal mistake and not actually meant to be the verse 'In manibus portabunt' (Cantus id a00040a) for the responsory 'Angelis suis' of the feast Angeli Custodi. For one thing, this verse has no place in the third sunday of Lent where all pieces neighbouring to it pertain, and for another the 1st mode of this verse does not match with the 6th of the responsory connected to it in the manuscript, 'Videns Iacob'.