1 Samuel 10:23

And they ran and fetched him thence: and when he stood among the people, he was higher than any of the people from his shoulders and upward.

Cross-reference

1 Samuel 9:2 gives the same description of Saul's height—'from his shoulders upward he was taller'—confirming his physical stature.

1 Samuel 16:7 warns not to judge by height—contrasting Saul's outward appearance with David's heart, showing God's different criteria.