وَتَسْتَخْفِي مِنْ مُلُوكِكَ وَمَا تَخْفَى خَافِيَةٌ عَلَى مَلِيكِكَ؟
You conceal yourself from earthly rulers, though nothing hidden escapes your true Sovereign?
Mulūk is the plural of malik, kings or rulers; malīk here signifies the supreme Sovereign, God. Tastakhfī is an attempt to conceal oneself, while khāfiyah is something concealed.
The sound relationship mulūkika / malīkika sharpens the contrast between human authority and absolute divine knowledge.