5 Heb “you tested my heart.”
6 Heb “you visited [at] night.”
7 Heb “you tested me, you do not find, I plan, my mouth will not cross over.” The Hebrew verbal form זַמֹּתִי (zammotiy) is a Qal perfect, first person singular from the root זָמַם (zamam, “plan, plan evil”). Some emend the form to a suffixed form of the noun, זִמָּתִי (zimmatiy, “my plan/evil plan”), and take it as the object of the preceding verb “find.” However, the suffix seems odd, since the psalmist is denying that he has any wrong thoughts. If one takes the form with what precedes, it might make better sense to read זִמּוֹת (zimmot, “evil plans”). However, this emendation leaves an unclear connection with the next line. The present translation maintains the verbal form found in the and understands it in a neutral sense, “I have decided” (see Jer 4:28). The words “my mouth will not cross over” (i.e., “transgress, sin”) can then be taken as a noun clause functioning as the object of the verb.
8 Heb “with regard to the deeds of man[kind].”
9 Heb “by the word of your lips, I, I have watched the paths of the violent” (i.e., “watched” in the sense of “watched for the purpose of avoiding”).

In other versions

You have tried my heart, you have visited me by night,

you have tested me, and you will find nothing;

I have purposed that my mouth will not transgress.

With regard to the works of man, by the word of your lips

I have avoided the ways of the violent.

Though you probe my heart,

though you examine me at night and test me,

you will find that I have planned no evil;

my mouth has not transgressed.

Though people tried to bribe me,

I have kept myself from the ways of the violent

through what your lips have commanded.

You have tested my heart;

you have examined me at night.

You have tried me and found nothing evil;

I have determined that my mouth will not sin.

Concerning what people do:

by the words from your lips

I have avoided the ways of the violent.

You have tested my thoughts and examined my heart in the night.

You have scrutinized me and found nothing wrong.

I am determined not to sin in what I say.

I have followed your commands,

which keep me from following cruel and evil people.

You have tried my heart;

you have examined me by night;

you have tested me; you found nothing.

I have decided that my mouth will not transgress.

As for the works of humankind,

by the word of your lips,

I have kept from the ways of the violent.

Thou hast proved mine heart; thou hast visited me in the night;

Thou hast tried me, and shalt find nothing;

I am purposed that my mouth shall not transgress.

Concerning the works of men, by the word of thy lips

I have kept me from the paths of the destroyer.

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