Truth bombs from Matthew 7... brace yourselves.
Handle yourself first and address your own sin before you even think to open up your mouth in judgment against anyone else (verses 1-5).
Don't bother giving anything of great value to anyone who won't appreciate it. They'll only show a lack of reverence for and abuse what is precious (verse 6).
Not everything is going to be handed to you by God. There is action required on your part, so you shouldn't have an idle faith and expect for things to just fall into your lap. A hole isn't going to dig itself when God gave you the shovel.
7 Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
8 For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
Treat others the way that you want to be treated.
12 Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.
There are many roads that lead to hell, but there is only one that leads to eternal life, and that's Jesus. Jesus is the strait and narrow gate. Don't be deceived.
13 Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat:
14 Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.
You can learn a lot about a person by observing the kind of fruit(s) that (s)he bears (verses 16-20).
It is possible to know the name of Jesus and not person of Jesus. You can profess to be a Christian all you want, but if you don’t have a personal relationship with Christ, at the end of the day, you're only fooling yourself and are in a very dangerous place. Truly get to know Him. Trust me, He's worth it (verses 21-23).
The Word of God, Jesus' commandments and sayings, aren't suggestions. Choosing to keep or ignore them is a life or death situation. The ball is in your court, and you have free will to choose to do what is wise or to do what is foolish (verses 24-27).