'Psalm' in the Bible

this [promise] God has fulfilled to our children [by] raising Jesus, as it is also written in the second psalm, 'You are my Son; today I have fathered you.'

Therefore he also says in another [psalm], 'You will not permit your Holy One to experience decay.'

{Therefore what should you do}, brothers? Whenever you come together, each one of you has a psalm, has a teaching, has a revelation, has a tongue, has an interpretation. All [things] must be [done] for edification.