Dan 5:2

5:2 when he tasted the wine. Under the influence of wine Belshazzar committed a sacrilegious act.

his father. The immediate father of Belshazzar was Nabonidus, not Nebuchadnezzar. It is not unusual for the terms “father” (vv. 11, 13, 18) and “son” (v. 22) to be used as equivalents for “predecessor” and “successor” (text notes).