Moses
Genesis 48:14ESV·traditional attribution

And Israel stretched out his right hand and laid it on the head of Ephraim, who was the younger, and his left hand on the head of Manasseh, crossing his hands (for Manasseh was the firstborn).

John Calvin Reformed @genevareformer

14. And Israel stretched out his right hand. Seeing his eyes were dim with age, so that he could not, by looking, discern which was the elder, he yet intentionally placed his hands across. And therefore Moses says that he guided his hands wittingly, because he did not rashly put them forth, nor transfer them from one youth to the other for the sake of...

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The blessing with which Jacob blessed the two sons of Joseph, which is the more remarkable because the apostle makes such particular mention of it (Heb 11:21), while he says nothing of the blessing which Jacob pronounced on the rest of his sons, though that also was done in faith. Observe here, 1. Jacob was blind for age, Gen 48:10.

Commenting on Genesis 48:8-22

John Gill Reformed Baptist @doctorgill

And Israel stretched out his right hand,.... Not directly forward, but across, or otherwise it would have been laid on Manasseh, as Joseph designed it should by the position he placed him in: and laid it upon Ephraim's head, who was the younger, the right hand being the strongest and most in use, as it was reckoned most honourable to sit at it, so to...