What does 'He hath' signify in the context of Luke 1?

'He hath' as declared by Elizabeth, Mary, and Zacharias represents a refrain of gratitude for what God has accomplished. In Luke 1:24, Elizabeth praises God for removing her reproach, saying, 'Thus hath the Lord dealt with me.' Similarly, Mary magnifies the Lord in Luke 1:46-49 for regarding her low estate and doing great things. Zacharias encapsulates this in Luke 1:68, expressing blessing for God's visitation and redemption. This repetition emphasizes the certainty and fulfillment of God's promises, rooting the believer's hope in the past actions of God and their implications for future grace. It illustrates how salvation is grounded in what God has done, creating a foundation for faith.