As for some Christians they don't want repeated teachings. But the important thing is we are reminded. Paul remind us we need to be strong in His grace. It's not just you hear new teachings the true meaning is when you apply His words. If you know not then do not apply. For all of us no matter how you know God's words we are not here to learn - but to know how to please God. Be sincere, write and put His words in our hearts.
For example, whenever you have fight with your spouse remember your wedding day how you two have been so sweet. To recall the good times is to forget the bad times.
1 Peter 1:12 It was revealed to them that they were not serving themselves but you, when they spoke of the things that have now been told you by those who have preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things.
The words and commandment given by the Lord; Love one another as I loved you. Remember how God provided for your needs.
On the other hand, the best way to learn is to teach, because when you teach you have to study. We need to always remember as 75% of what you hear will just go in and out of your ears but if you keep on hearing it only 25% will stay in your thoughts. The power of Practice and Repetition will instill the lessons in our brain.
To have endurance we need His words. Understand what is in the Last Days; mockers and false teachings will come. You might wonder where is Jesus? He promise He will come but God has it own time.
2 Peter 2:5-7 5if he did not spare the ancient world when he brought the flood on its ungodly people, but protected Noah, a preacher of righteousness, and seven others; 6if he condemned the cities of Sodom and Gomorrah by burning them to ashes, and made them an example of what is going to happen to the ungodly; 7and if he rescued Lot, a righteous man, who was distressed by the filthy lives of lawless men
God did promise He will not destroy Earth in water or flood again but He never promise He will not destroy Earth in fire.
Revelation 20:9 They marched across the breadth of the earth and surrounded the camp of God's people, the city he loves. But fire came down from heaven and devoured them.
God is eternal He has no beginning and end.
2 Peter 2:9 if this is so, then the Lord knows how to rescue godly men from trials and to hold the unrighteous for the day of judgment, while continuing their punishment.
We sin everyday but God give us a chance to repent and turn away from our sin.
Romans 2:4 Or do you show contempt for the riches of his kindness, tolerance and patience, not realizing that God's kindness leads you toward repentance?
Matthew 9:4 Knowing their thoughts, Jesus said, "Why do you entertain evil thoughts in your hearts?
Free from the love of money - for it is the root of all evil.
Remember the chicken and the pig story. That's the picture of true commitment.
2 Timothy 1:7 "For God did not give us a spirit of timidity but a spirit of power, of Love and self-discipline."
The word timidity means "fear or shyness". As believers of Christ, we should not be timid to share our faith to others. For the spirit of timidity does not come from God. So I encourage you to use your spiritual gifts and share your faith for God's greater glory!