1 Coirinthians 10:1-5
"For I want you to know, brothers, that our fathers were all under the cloud, and all passed through the sea and all were baptized into Moses in the cloud and in the sea, and all ate the same spiritual food, and all drank the same spiritual drink. For they drank from the spiritual Rock that followed them, and the Rock was Christ. Nevertheless, with most of them God was not pleased, for they were overthrown in the wilderness."
After Moses led the Israelites out of captivity in Egypt, they had to travel quite some distance on foot to arrive at their destination - the Promised Land. God had promised Abraham many years earlier that his offspring would one day become a great nation. God was leading this nation through the wilderness to inherit that land where they would live.
The problem for the Israelites was that it would be hard work. Traveling long distances, battling the enemy, dealing with hunger and thirst - these are not easy things. Even though they had been in slavery in Egypt, at least they'd had plenty to eat and drink, and knew where they would sleep each night!
They had become comfortable in their captivity. Stepping out into God's will was not comfortable. In 1 Corinthians 10 Paul is telling us that the Israelites worshiped and followed the same God that we worship and follow. He hasn't changed. They received their guidance from the same "spiritual Rock" as we do. That Rock is Jesus Christ.
But following Jesus can become very uncomfortable at times. The difficulties we encounter as Christ followers are not what most people would choose, or consider fun. But Jesus doesn't call us to follow Him so we could enjoy the ride. He calls us to follow Him so that we can become more like Him, so that we can be made holy as He is holy.
We must heed the example of the Israelites (see 1 Corinthians 10:6-13). They lived to eat, drink, and play. And as a result, many of them were destroyed. They desired comfort, and when they didn't get it, they grumbled. And many of them were destroyed. God does not call you to a life of comfort. I continue to hear James 1:2 in the back of my mind: "Count it all joy...when you meet trials of various kinds."
We are not called to a life of comfort. We are called to a life of following Jesus at any cost.