Ruth asked Boaz to spread his wings over her, symbolized by spreading his cloak over her. (Ruth 3:9) She asked that he marry her as the kinsman redeemer. It is a symbol of coming under his protection and possession.
God often spoke of Israel as his bride in the Old Testament. In Ezekiel 16:8-10, God said e spread the corner of his garment over Israel, entered into a covenant with her and made her beautiful. Yet, Israel was unfaithful and trusted in her success. So, God brought destruction on her.
The New Testament continues the image. The church is the bride of Christ. He gave us new life, made a covenant with us and wants the church to be holy as a beautiful bride. We should respond, not as Israel did, but with gratitude and joy. We want our lives, as individuals and as the church to reflect the beauty and holiness of the bridegroom, Jesus our Redeemer and Lord.