"For the time will come when they will not endure sound doctrine; but wanting to have their ears tickled, they will accumulate for themselves teachers in accordance to their own desires,"
2 Tim 4:3
The apostle Paul gave this great warning to his young protege, Timothy. Though it is a message to ministers even to this day, it is likewise a message to all believers. In fact, the men of God have always been unpopular among some. Noah, Elijah, Isaiah, Jeremiah and Jesus, among others, come to mind as those whose message was not welcome.
Now as then, people do not want to hear the things of God that are contrary to the sensual way they wish to lead their lives. Whether it involves worshipping other gods, indulging in immoral lifestyles, failure to obey or consistently indulging in a variety of temptations, most have no desire to hear that they are wrong and that their habits are outside the will of God.
This is a big enough problem but it multiplies exponentially when we warp the worship of God around our indulgences. Whether this is building a religious organization around something God condemns or simply hiring a preacher that only talks about the "good and happy stuff," the issue is the same.
Beloved, all of God's word is for us. Through it, He blesses us and chastises us. He does both of these because He loves us. We need to hear that Jesus came to seek and save the lost. We also need to hear that we were lost because of sin. We need to hear that all of our needs will be supplied. We also need to hear that it is more blessed to give than to receive. We need to hear that we should love each other. We also need to hear that we should love our enemies.
Let us always pursue the whole will of God and not just the parts that we want to hear. The soundness of the doctrine (teaching) is in its truth and its completeness.