John Gill Commentary 2 Samuel 7:9

"and I have been with thee whithersoever thou wentest, and have cut off all thine enemies from before thee; and I will make thee a great name, like unto the name of the great ones that are in the earth." — 2 Samuel 7:9 (ASV)

And I was with you wherever you went
When he went against Goliath, when he went forth against the Philistines, when in Saul's court, when he fled from Saul, and was obliged to go to various places, God was with him protecting and preserving him, prospering and succeeding him every where, and in everything:

and have cut off all your enemies out of your sight :
as Saul, and others in the land of Israel, and the Philistines, and other enemies round about him, so that he had rest from them all;

and have made you a great name, like unto the name of the great [men]
that are in the earth ;
a name for a mighty king, warrior, and conqueror, such as some mighty kings and great men of the earth had obtained, and such fame, being made king over all Israel; and his success against the Jebusites had got him a name, as well as former victories he had been favoured with; on account of all which his name and fame had been spread abroad in the world, and he was reckoned as one of the greatest princes in it.