Abraham and Sarah in Hebrews 11: faith as trust in specific divine promises, not evidence-free belief

Abraham (v.8) trusted God's promise and went out 'not knowing where he was going' — he had God's word as the basis for confidence about an unknown future. Sarah (v.11) trusted God because 'she considered him faithful who had promised' — the basis for her faith was God's track record of faithfulness, not absence of evidence. Mike underscores that Hebrews 11 shows what faith looks like (acting on confidence in future promises), not how one acquires or justifies faith.