"to be merciful to" or "to act according to his mercy"
## remember ##
In this context "remember" does not mean to not forget. It means to keep a commitment or fulfill something.
## from the hand of our enemies ##
"from the control of our enemies" or "from being harmed and enslaved by our enemies." "Hand" refers to the harmful control or power a person has over another person. (See: [[rc://en/ta/man/translate/figs-metonymy]])
## without fear ##
This could be translated as "without being afraid of our enemies."
## in holiness and righteousness ##
"in holy and righteous ways" (UDB) or "while we live in a holy and righteous way" or "while we live holy lives and do what is right"