Yea, they despised {m} the pleasant land, they believed not his word:

(m) That is Canaan, which acted as a promise of the heavenly inheritance to come, though it was only worth a penny in comparison to the value of the inheritance itself.

Wesley's Notes

106:24 Despised - Preferring Egypt, and their former bondage, before it, Numb 14:3,4.

King James Translators' Notes

the pleasant...: Heb. a land of desire

Jamieson-Fausset-Brown Bible Commentary

24-27. The sin of refusing to invade Canaan, "the pleasant land" (Jer 3:19; Eze 20:6; Da 8:9), "the land of beauty," was punished by the destruction of that generation (Nu 14:28), and the threat of dispersion (De 4:25; 28:32) afterwards made to their posterity, and fulfilled in the great calamities now bewailed, may have also been then added.

despised-(Nu 14:31).

believed not his word-by which He promised He would give them the land; but rather the word of the faithless spies (compare Ps 78:22).

Matthew Henry's Concise Commentary

106:13-33 Those that will not wait for God's counsel, shall justly be given up to their own hearts' lusts, to walk in their own counsels. An undue desire, even for lawful things, becomes sinful. God showed his displeasure for this. He filled them with uneasiness of mind, terror of conscience, and self-reproach. Many that fare deliciously every day, and whose bodies are healthful, have leanness in their souls: no love to God, no thankfulness, no appetite for the Bread of life, and then the soul must be lean. Those wretchedly forget themselves, that feast their bodies and starve their souls. Even the true believer will see abundant cause to say, It is of the Lord's mercies that I am not consumed. Often have we set up idols in our hearts, cleaved to some forbidden object; so that if a greater than Moses had not stood to turn away the anger of the Lord, we should have been destroyed. If God dealt severely with Moses for unadvised words, what do those deserve who speak many proud and wicked words? It is just in God to remove those relations that are blessings to us, when we are peevish and provoking to them, and grieve their spirits.