And Joseph brought them out from between his knees (literally, from near his knees, i.e. the knees of his father, who while in the act of embracing had drawn them into that position), and he (viz. Joseph) bowed himself with his face to the earth.
The reading "and they bowed themselves," i.e. Ephraim and Manasseh (Samaritan, Michaelis), and the rendering καὶ προσκύνησαν αὐτῴ (LXX.), are incorrect.