The words are expunged from the sacred text by Lachmann, Tischendorf, Westcott and Hort, and M'Clellan.

There is a less weight of authority for their retention.

In any case the double reading was certainly current at the end of the second century, as the words are found in Irenaeus and omitted by Tertullian.
The elaborately varied readings of Matt.xi.

25-27 and Matt.

xix.
16, 17 there can be little doubt are taken from the canonical text.