What are the foundational truths of Christianity?

In the sermon, three foundational truths are highlighted as essential to the Christian faith: God's Word, salvation by grace, and faith alone. God's Word serves as the ultimate authority, and it is through the Scriptures that we understand our need for a Savior. Salvation is presented not as a work or an offer, but as a sovereign act of grace bestowed upon God's elect. Finally, faith alone signifies that trusting in Jesus Christ is the sole means of receiving salvation, entirely apart from human merit. Together, these truths form the bedrock of sound doctrine and the believer's assurance in Christ.