Now renders a Hebrew adverb that may mean “now, at the present time” or “now, in these circumstances.” The first sense is more likely in this context.

O my God: Once again the vocative O reflects nothing in the Hebrew and may be omitted in translation.

Let thy eyes be open and thy ears be attentive to a prayer of this place: Let thy eyes be open and thy ears be attentive is an idiomatic expression meaning “look and listen” (see the comments on verse 20). In languages where it is inappropriate to speak of God as having body parts like eyes and ears, it may be more acceptable to use such imperatives. But to convey the full force of this expression, it may be advisable to say “look carefully and listen attentively.”

A prayer of this place does not refer to a single prayer, but to all the prayers offered to God in his Temple. Prayer has a collective sense here, so it may be rendered “prayers” (Good News Translation). This place refers again to the Temple. In some languages it may be more natural to say simply “here” (Parole de Vie).

Quoted with permission from Omanson, Roger L. and Ellington, John E. A Handbook on 1-2 Chronicles, Volume 1. (UBS Helps for Translators). Miami: UBS, 2014. For this and other handbooks for translators see here .