Once have I sworn by my holiness that I will not lie unto David.
Read Chapter 89
George Leo Haydock
Holiness. Or by myself , having nothing greater, Hebrews vi. 13. (Calmet)
I will not. Literally, "if I lie "which is a Hebrew idiom, (Berthier) implying as much. (Worthington)
I have sworn irrecoverably, once for all. (Menochius)