Genesis 48:7

Rachel died by me This circumstance he here mentions, partly because the sight of Joseph and his children brought his beloved Rachel, Joseph's mother, to his remembrance; and partly that he might assign a reason for transferring the right of the firstborn to Joseph, which was not only because Rachel was his first rightful wife by designation and contract, but because by her early death he was cut off from all hopes of having more children by her, and therefore it was but fit that he should supply that defect by adopting Joseph's children. The removal of dear relations from us is an affliction the remembrance of which cannot but abide with us a great while. Strong affections in the enjoyment of any blessing cause long afflictions in the loss of it.