Arabic word order may communicate more than grammatical correctness; it can signal restriction, emphasis, or special attention through fronting (Taqdīm) and postponement (Taʾkhīr).
إِيَّاكَ نَعْبُدُ
You alone we worship.
Placing the object “You” before the verb foregrounds exclusivity. The ordinary wording “We worship You” reports the action without the same formal force of fronting.
This is an instructional application: the precise rhetorical effect of any fronting must always be determined by its context.