Abram’s childlessness made God’s announcement of reward dubious. But when God spoke a promise, reward became certain. News of Jesus’ resurrection was doubtful to Thomas. But Jesus spoke blessing to those who believe based simply on hearing God’s Word. Peter, who also saw the resurrected Christ assures us that because Scripture comes from the Holy Spirit, it is reliable in attesting to the resurrection of Jesus.
In all these cases, certainty comes from God’s Word. What a blessing that we have uninhibited access that Word that gives certainty. But do we always look to the Word for certainty, or do we turn to other sources? Moreover, how often do we believe the word of liars like reason, culture, and our law-governed self over the divinely inspired Word of God?