7 Heb “when I was silent.”
8 Heb “my bones became brittle.” The psalmist pictures himself as aging and growing physically weak. Trying to cover up his sin brought severe physical consequences.
9 Heb “your hand was heavy upon me.”
10 Heb “my [?] was turned.” The meaning of the Hebrew term לְשַׁד (léshad) is uncertain. A noun לָשָׁד (lashad, “cake”) is attested in Num 11:8, but it would make no sense to understand that word in this context. It is better to emend the form to לְשֻׁדִּי (léshuddiy, “to my destruction”) and understand “your hand” as the subject of the verb “was turned.” In this case the text reads, “[your hand] was turned to my destruction.” In Lam 3:3 the author laments that God’s “hand” was “turned” (הָפַךְ, hafakh) against him in a hostile sense. You tried to destroy me. The psalmist’s statement reflects his perspective. As far as he was concerned, it seemed as if the Lord was trying to kill him.
11 The translation assumes that the plural form indicates degree. If one understands the form as a true plural, then one might translate, “in the times of drought.”
12 Summer. Perhaps the psalmist suffered during the hot season and perceived the very weather as being an instrument of divine judgment. Another option is that he compares his time of suffering to the uncomfortable and oppressive heat of summer.
13 The Hiphil of ידה normally means “give thanks, praise,” but here, as in Prov 28:13, it means “confess.”
14 Heb “the wrongdoing of my sin.” By joining synonyms for “sin” in this way, the psalmist may be emphasizing the degree of his wrongdoing.

In other versions

ESVEnglish Standard Version

For when I kept silent, my bones wasted away

through my groaning all day long.

For day and night your hand was heavy upon me;

my strength was dried up as by the heat of summer. Selah

I acknowledged my sin to you,

and I did not cover my iniquity;

I said, “I will confess my transgressions to the Lord,”

and you forgave the iniquity of my sin. Selah

NIVNew International Version (2011)

When I kept silent,

my bones wasted away

through my groaning all day long.

For day and night

your hand was heavy on me;

my strength was sapped

as in the heat of summer.

Then I acknowledged my sin to you

and did not cover up my iniquity.

I said, “I will confess

my transgressions to the Lord.”

And you forgave

the guilt of my sin.

CSBChristian Standard Bible

When I kept silent, my bones became brittle

from my groaning all day long.

For day and night your hand was heavy on me;

my strength was drained

as in the summer’s heat.

Selah

Then I acknowledged my sin to you

and did not conceal my iniquity.

I said, “I will confess my transgressions to the Lord,”

and you forgave the guilt of my sin.

Selah

NLTNew Living Translation

When I refused to confess my sin,

my body wasted away,

and I groaned all day long.

Day and night your hand of discipline was heavy on me.

My strength evaporated like water in the summer heat.

Interlude

Finally, I confessed all my sins to you

and stopped trying to hide my guilt.

I said to myself, “I will confess my rebellion to the Lord.”

And you forgave me! All my guilt is gone.

Interlude

LEBThe Lexham English Bible

When I kept silent, my bones were worn out

due to my groaning all the day.

For day and night your hand was heavy upon me.

My vigor was changed into the dry heat of summer. Selah

I made known my sin to you, and my iniquity I did not cover.

I said, “I will confess concerning my transgressions to Yahweh,”

and you took away the guilt of my sin. Selah

KJV 1900King James Version

When I kept silence, my bones waxed old

Through my roaring all the day long.

For day and night thy hand was heavy upon me:

My moisture is turned into the drought of summer. Selah.

I acknowledged my sin unto thee,

And mine iniquity have I not hid.

I said, I will confess my transgressions unto the Lord;

And thou forgavest the iniquity of my sin. Selah.

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