What does the saying 'salvation is of the Lord' mean?

The phrase 'salvation is of the Lord' highlights the principle that salvation comes solely through God's grace and divine will. This aligns with the doctrines of sovereign grace, where it is understood that God initiates salvation and it is His power alone that redeems individuals. This belief underscores the total depravity of man and the necessity of divine intervention in order to bring about true faith and repentance. It guarantees that final salvation rests not on human effort but on the finished work of Christ, who alone has the authority to save.