Hebrews 3:15

We see the example of failure in Israel’s unbelief at Kadesh-barnea, which the writer repeated for emphasis. Much misinterpretation of the warnings in Hebrews has arisen over failure to appreciate that this writer was drawing parallels between the behavior of God’s people in the past (Israel) and the behavior of God’s people in the present (the church). Christians face the same kinds of temptations that the Israelites did, and we should learn from their mistakes (cf. 1 Corinthians 10:1-22).

"The allusions to Numbers 14 are significant because they indicate that unbelief is not a lack of faith or trust. It is the refusal to believe God. It leads inevitably to a turning away from God in a deliberate act of rejection." [Note: Lane, p. 86.]