32 Heb “and [with] a willing spirit sustain me.” The psalmist asks that God make him the kind of person who willingly obeys the divine commandments. The imperfect verbal form is used here to express the psalmist’s wish or request.
33 The cohortative expresses the psalmist’s resolve. This may be a vow or promise. If forgiven, the psalmist will “repay” the Lord by declaring God’s mercy and motivating other sinners to repent.
34 Heb “your ways.” The word “merciful” is added for clarification. God’s “ways” are sometimes his commands, but in this context, where the teaching of God’s ways motivates repentance (see the next line), it is more likely that God’s merciful and compassionate way of dealing with sinners is in view. Thanksgiving songs praising God for his deliverance typically focus on these divine attributes (see Pss 34, 41, 116, 138).
35 Or “return,” i.e., in repentance.
36 Heb “from bloodshed.” “Bloodshed” here stands by metonymy for the guilt which it produces.
37 Heb “my tongue will shout for joy your deliverance.” Another option is to take the prefixed verbal form as a jussive, “may my tongue shout for joy.” However, the pattern in vv. 12–15 appears to be prayer/request (see vv. 12, 14a, 15a) followed by promise/vow (see vv. 13, 14b, 15b).
38 Heb “open my lips.” The imperfect verbal form is used here to express the psalmist’s wish or request.
39 Heb “and my mouth will declare your praise.”

In other versions

ESVEnglish Standard Version

Restore to me the joy of your salvation,

and uphold me with a willing spirit.

Then I will teach transgressors your ways,

and sinners will return to you.

Deliver me from bloodguiltiness, O God,

O God of my salvation,

and my tongue will sing aloud of your righteousness.

O Lord, open my lips,

and my mouth will declare your praise.

NIVNew International Version (2011)

Restore to me the joy of your salvation

and grant me a willing spirit, to sustain me.

Then I will teach transgressors your ways,

so that sinners will turn back to you.

Deliver me from the guilt of bloodshed, O God,

you who are God my Savior,

and my tongue will sing of your righteousness.

Open my lips, Lord,

and my mouth will declare your praise.

CSBChristian Standard Bible

Restore the joy of your salvation to me,

and sustain me by giving me a willing spirit.

Then I will teach the rebellious your ways,

and sinners will return to you.

Save me from the guilt of bloodshed, God—

God of my salvation—

and my tongue will sing of your righteousness.

Lord, open my lips,

and my mouth will declare your praise.

NLTNew Living Translation

Restore to me the joy of your salvation,

and make me willing to obey you.

Then I will teach your ways to rebels,

and they will return to you.

Forgive me for shedding blood, O God who saves;

then I will joyfully sing of your forgiveness.

Unseal my lips, O Lord,

that my mouth may praise you.

LEBThe Lexham English Bible

Restore to me the joy of your salvation,

and with a willing spirit sustain me.

Then I will teach transgressors your ways,

and sinners will turn back to you.

Deliver me from the guilt of bloodshed, O God,

the God of my salvation;

then my tongue will sing aloud of your righteousness.

O Lord, open my lips,

and my mouth will proclaim your praise.

KJV 1900King James Version

Restore unto me the joy of thy salvation;

And uphold me with thy free spirit.

Then will I teach transgressors thy ways;

And sinners shall be converted unto thee.

Deliver me from bloodguiltiness, O God, thou God of my salvation:

And my tongue shall sing aloud of thy righteousness.

O Lord, open thou my lips;

And my mouth shall shew forth thy praise.

Public Domain