John Gill Commentary Genesis 48:11

"And Israel said unto Joseph, I had not thought to see thy face: and, lo, God hath let me see thy seed also." — Genesis 48:11 (ASV)

And Israel said to Joseph, I had not thought to see your
face
Some years ago he never expected to have seen him any more; he had given him up for lost, as a dead man, when his sons brought him his coat dipped in blood; and by reason of the long course of years which passed before ever he heard anything of him:

and, lo, God has shown me also your seed ;
it was an additional favour to see his offspring; it can hardly be thought, that in a course of seventeen years he had been in Egypt, he had not seen them before, only he takes this opportunity, which was the last he should have of expressing his pleasure on this occasion.