Albert Barnes Commentary Psalms 105:45

"That they might keep his statutes, And observe his laws. Praise ye Jehovah." — Psalms 105:45 (ASV)

That they might observe his statutes, and keep his laws - The end - the design - of all this was that they might be an obedient people. This was the purpose of all his interventions in their behalf; and their obligation to obedience was enforced and measured by what he had done. The same is true in regard to his people now.

Praise ye the Lord - Hebrew, Hallelu-jah. See Psalms 104:35.