What does it mean to presume on God's grace?

Presuming on God's grace refers to the misguided belief that one can receive God's blessings without genuine faith or obedience. This is a grave misunderstanding of divine grace. Walter Pendleton points out that after declaring judgment on the Israelites in Numbers 14, God still communicates hope to those who will humbly believe and obey. Hebrews 4:1 warns against falling short of God's promise through unbelief, indicating that presumption can lead to spiritual peril. The Israelites’ failure to trust God led to their exclusion from the promised land, demonstrating that a casual approach to grace lacks the seriousness required for true relationship with God. God's grace must be received with reverence and careful assurance of faith, as it involves a divine calling that does not allow for complacency.