Listening is a must for anyone who wants to learn. So that when you are not attentive, you will later lack the understanding of the things talked about. It may be a revision or addition of the things already done in the past.
One example is the instruction of the Apostles to the members of the Church to leave the principles of the doctrine of Christ.
Hebrews 6:1 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
What are those doctrines that they must leave?
Hebrews 6:2 Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.
We must leave them because all Christians had gone through these process, the very reason why we are called Christians.
We religiously attended the gatherings because of the promise of eternal life. Remember that we are all considered dead before baptism.
1 Timothy 5:6 But she that liveth in pleasure is dead while she liveth.
And we desire that every one of us do show diligence to the full assurance of hope unto the end through faith and patience.
Hebrews 6:4-6 For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost, And have tasted the good word of God, and the powers of the world to come, If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
Have you tasted the good word of God called the breaking of bread? I don't mean bakery bread. Hey! talkative priests, are you listening?