Pray about where you should fellowship. Make sure the place you are going to call your church home calls sin what it is -- sin. Do they believe the promises of God? Are they loving? Does the pastor treat his wife with respect? Is he a man of the Word? Does he have a humble heart, and a gentle spirit? Listen closely to his teaching. It should glorify God, magnify Jesus, and edify the believer. One evidence that you have been truly saved is that you will have a love for other Christians (1 John 3:14). You will want to fellowship with them. The old saying that "birds of a feather flock together" is true of Christians. You gather together for the breaking of bread (communion), for teaching from the Word, and for fellowship. You share the same inspirations, illuminations, inclinations, temptations, aspirations, motivations, and perspirations -- you are working together for the same thing, for the furtherance of the Kingdom of God on earth. This is why you attend church -- not because you have to, but because you want to.
Don't become a "spiritual butterfly." Send your roots down. If you are moving from church to church, how will your pastor know what type of food you are digesting? The Bible says that your shepherd will have to give an account to Him that has entrusted you to him (Hebrews 13:17), so make yourself known to your pastor. Pray for him regularly. Pray also for his wife, his family, and the elders. Being a pastor is no easy task. Most people don't realize how many hours it takes to gather a fresh sermon each week. They don't appreciate the time spent in prayer and in the study of the Word. If the pastor makes the same joke twice, or shares something he has shared before, remember, he's human. So give him a great deal of grace, and double honor. Never murmur about him. If you don't like something he has said, pray about it, then leave the issue with God. If that doesn't satisfy you, leave the church, rather than divide it through murmuring and complaining.
A woman once spread some hot gossip about a local pastor. What he had supposedly done became common knowledge around town. Then she found that what she had heard wasn't true. She gallantly went to the pastor, and asked for his forgiveness. The pastor forgave her, but then told her to take a pillow full of tiny feathers to a corner of the town, and in high winds, shake the feather out. Then he told her to try and pick up every feather. He explained that the damage had already been done. She had destroyed his good reputation, and trying to repair the damage was like trying to pick up feathers in high winds.
The Bible says that there is life and death in the power of the tongue. We can kill or make something alive with our words. The Scriptures also reveal that God hates those who cause division among the brethren (Proverbs 6:16). Pray with the psalmist, "Set a guard O Lord, over my mouth; keep the door of my lips."
Remember the old saying, "He that gossips to you, will gossip about you."