# Righteousness protects those

"A way of life approved by Yahweh protects". "Righteousness" represents a way of life approved by Yahweh.

# who are faultless in their path

"who are faultless in their way of living" or "who live lives of integrity"

# wickedness ruins those who commit sin

"wickedness ruins sinners' lives" or "sinners ruin their lives by committing wickedness"