# He stores up sound wisdom for the upright

"He teaches what is truly wise to the upright". This is spoken of as if wisdom were an item that Yahweh stores and gives to people.

# the upright

"the person who lives rightly" or "people who live rightly"

# sound

"dependable"

# he is a shield for those

"God protects those"

# who walk in integrity

"who behave with integrity" or "who live their lives as they should"