en_tn/pro/02/06.md

from his mouth comes knowledge and understanding

"God's words give us knowledge and understanding" (See: rc://en/ta/man/translate/figs-personification)

sound

"dependable"

he is a shield for those

"God protects those" (See: rc://en/ta/man/translate/figs-metaphor)

he guards the paths of justice

Possible meanings: 1) "God makes sure that people act justly" (see UDB) or 2) "God protects those who act justly." (See: rc://en/ta/man/translate/figs-metaphor)

preserve the way of

"protect"