Passage
The law of his God <FI>is<Fi> his heart, His steps do not slide.
The law of his God <FI>is<Fi> his heart, His steps do not slide.
Psalms 37:29 The righteous possess the land, And they dwell for ever on it.
Psalms 37:30 The mouth of the righteous uttereth wisdom, And his tongue speaketh judgment.
Psalms 37:31 The law of his God <FI>is<Fi> his heart, His steps do not slide.
Psalms 37:32 The wicked is watching for the righteous, And is seeking to put him to death.
Psalms 37:33 Jehovah doth not leave him in his hand, Nor condemn him in his being judged.
The verse centers on "heart", "steps", and "slide". It is saying that the verse draws attention to "heart" and "steps", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 30's "The mouth of the righteous uttereth wisdom..." into verse 32's "The wicked is watching for the righteous...", so "heart" and "steps" 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 "heart" and "steps" with trust shaped by these words, not by a vague optimism outside the passage.