Sam talks from 1 Corintians 1 verses 8 - 9:

• God’s Faithfulness Is Defined in His Character. Faithfulness is not just what God does; it’s who He is. God will never fail, never break trust, and never abandon us.
• God’s Faithfulness Depends on God. If God’s faithfulness flows from His very nature, then it isn’t dependent on us. God doesn’t operate in contracts; ones written with clauses. He operates in covenants; He totally gives Himself to us.
• God’s Faithfulness Is Demonstrated by Our Salvation. The greatest display of God’s faithfulness is seen at the cross. He has already fulfilled the most painful promise of all; to save you through the cross. The cross is God’s ultimate act of faithfulness.