Psalms 37:31

29 The righteous shall inherit the land, and dwell therein for ever.

30 The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.

The law of his God is in his heart; none of his steps shall slide.

32 The wicked watcheth the righteous, and seeketh to slay him.

33 The LORD will not leave him in his hand, nor condemn him when he is judged.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
The law of his God is in his heart; his steps do not falter.
KJV
The law of his God is in his heart; none of his steps shall slide.
WEB
The law of his God is in his heart. None of his steps shall slide.
ASV
The law of his God is in his heart; None of his steps shall slide.
DARBY
the law of his God is in his heart; his goings shall not slide.
BLB
The law of his God [is] in his heart; his steps do not slip.
ÅB
Hans Guds lov er i hjertet hans;
trinnene hans vakler ikke.
OTB
Deres Guds lov er i deres hjerter;
Deres skritt vakler ikke.
B1930
Hans Guds lov er i hans hjerte, hans trin vakler ikke.

Study notes (Tyndale)

Original text and word study

Cross references