'Desert' in the Bible

do not harden your hearts as in the rebellion,on the day of testing in the wilderness,

Take care, brothers and sisters, that there not be in any one of you a wicked, unbelieving heart [which refuses to trust and rely on the Lord, a heart] that turns away from the living God.

while it is said,“Today [while there is still opportunity] if you hear His voice,Do not harden your heart, as when they provoked Me [in the rebellion in the desert at Meribah].”

And who was He provoked with for 40 years? Was it not with those who sinned, whose bodies fell in the wilderness?

Make sure that your character is free from the love of money, being content with what you have; for He Himself has said, “I will never desert you, nor will I ever forsake you,”