en_tn/psa/017/003.md

If you test my heart, if you come to me in the night

Here "test my heart" means to examine my thoughts and motives. AT: "If you examine my thoughts in the night" (See: rc://en/ta/man/translate/figs-idiom)

my mouth will not transgress

Here the mouth is spoken of as if it were capable of acting on its own. It also represents the words that a person speaks. AT: "I will not tell lies or sin with my words" (See: rc://en/ta/man/translate/figs-personification and rc://en/ta/man/translate/figs-synecdoche)