How do we know that Ruth's commitment to Naomi teaches about faith?

Ruth's words, 'Whither thou goest, I will go; and where thou lodgest, I will lodge; thy people shall be my people, and thy God my God' (Ruth 1:16), illustrate her deep faith and commitment. By leaving her Moabite heritage and choosing to associate herself with Naomi and the God of Israel, Ruth demonstrates a transformative faith that turns from idolatry to the true God. This is reflective of a true believer's journey of repentance and faith, wherein one recognizes their need for salvation and the desire to be united with God's people. Thus, Ruth's response signifies not merely an emotional decision but a profound acceptance of both Naomi and her God.