1 Chronicles 11:7

And David dwelt in the castle; therefore they called it the city of David.

Cross References

2 Samuel 5:7 Nevertheless David took the strong hold of Zion: the same is the city of David.
1 Chronicles 11:5 And the inhabitants of Jebus said to David, Thou shalt not come hither. Nevertheless David took the castle of Zion, which is the city of David.
Psalms 2:6 Yet have I set my king upon my holy hill of Zion.