Charles Ellicott Commentary Psalms 140:13

"Surely the righteous shall give thanks unto thy name: The upright shall dwell in thy presence." — Psalms 140:13 (ASV)

Surely. —Or, perhaps here, only, the primary meaning of the particle.

Dwell. —For the thought, compare to Psalms 11:7; Psalms 16:11. After the peril and seeming abandonment, God again proves the covenant promise true, and those whom the heathen would have chased from the land find in it a sure dwelling-place in the light of the presence and favour of Jehovah.