How do we know that God's eternal covenant is true?

The certainty of God's eternal covenant is portrayed through the covenant of redemption made between the Father and the Son before the foundation of the world. This covenant ensures that all things are upheld until every elected soul is redeemed. Christ's coming was not an afterthought but a defined plan to fulfill God's promise of salvation. As stated in Hebrews, the works were finished at creation's foundation, attesting to the sovereign plan of God to redeem His people, confirming the truth of His covenant in every believer's life.