Passage
Therefore my heart is glad and my glory rejoices; My flesh also will dwell securely.
Psalms 16:9 (LSB)
Nearby Context
Psalms 16:7 I will bless Yahweh who has counseled me; Indeed, my mind instructs me in the night.
Psalms 16:8 I have set Yahweh continually before me; Because He is at my right hand, I will not be shaken.
Psalms 16:9 Therefore my heart is glad and my glory rejoices; My flesh also will dwell securely.
Psalms 16:10 For You will not forsake my soul to Sheol; You will not give Your Holy One over to see corruption.
Psalms 16:11 You will make known to me the path of life; In Your presence is fullness of joy; In Your right hand there are pleasures forever.
Study Lenses
The verse centers on "therefore", "heart", "glad", "glory", "rejoices", "flesh", "dwell", and "securely". It is saying that the verse draws attention to "therefore" and "heart", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 8's "I have set Yahweh continually before me..." into verse 10's "For You will not forsake my soul...", so "therefore" and "heart" 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 "therefore" and "heart" with trust shaped by these words, not by a vague optimism outside the passage.