Passage
Who is forgiving all thine iniquities, Who is healing all thy diseases,
Who is forgiving all thine iniquities, Who is healing all thy diseases,
Psalms 103:1 By David. Bless, O my soul, Jehovah, And all my inward parts--His Holy Name.
Psalms 103:2 Bless, O my soul, Jehovah, And forget not all His benefits,
Psalms 103:3 Who is forgiving all thine iniquities, Who is healing all thy diseases,
Psalms 103:4 Who is redeeming from destruction thy life, Who is crowning thee--kindness and mercies,
Psalms 103:5 Who is satisfying with good thy desire, Renew itself as an eagle doth thy youth.
The verse centers on "iniquities", "forgiving", "thine", "healing", and "diseases". It is saying that the verse draws attention to "iniquities" and "forgiving", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 2's "Bless O my soul Jehovah And forget..." into verse 4's "Who is redeeming from destruction thy life...", so "iniquities" and "forgiving" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "iniquities" and "forgiving" with trust shaped by these words, not by a vague optimism outside the passage.