Charles Ellicott Commentary Numbers 22:30

"And the ass said unto Balaam, Am not I thine ass, upon which thou hast ridden all thy life long unto this day? was I ever wont to do so unto thee? and he said, Nay." — Numbers 22:30 (ASV)

Ever since I was yours. Literally, ever since you lived, — i.e., all your life long. The Targums of Jonathan and of Jerusalem paraphrase thus: “upon which you have ridden from your youth to this day.” “An Arabic writer,” says Dr. Gill, in his Commentary, on this passage, “makes mention of an ass that the owner rode on for forty years.”

To this day. The use of these words in this place serves to shed light on such passages as Deuteronomy 3:14, called them after his own name ... unto this day, and shows that they do not necessarily denote that the events to which reference is made were separated by any very long interval.