Why is the covenant between the Father and the Son significant?

The covenant between the Father and the Son is foundational to Reformed theology as it assures believers of their salvation and the fulfilled promises of God. Unlike the previous covenants made with man, which were often broken, this covenant is eternal and unbreakable. It illustrates the commitment of God to His people and the redemptive work accomplished by Christ. Jesus affirmed this relationship when He stated that all whom the Father gives to Him will come to Him (John 6:37), emphasizing the security and efficacy of this divine covenant.