I would greatly encourage you to read these verses in your own Bible before you read my thoughts on them. I was running a little short on time and couldn't type them out for you this week! :)
The wicked plot against the righteous, but the Lord only looks down at those plots and laughs. The Lord sees the day coming when the wicked will be judged. God is not worried about the schemes against His people, He still has sovereign control over everything.
Although the wicked attack the righteous, verse 15 shows us that their end will come. Not only that, but they will be taken down in the same way that they try to take down the righteous. This bring Haman to my mind. He built gallows to impale Mordecai, but ended up hanging there himself!
We are told that we will be judged in the way that we judge. We can also see this principle applied to the wicked. God will judge those who attack His people, either in a physical or spiritual sense. We can be assured of God's love and protection for us.
Does this mean that we will never face hardships and trials? No, in fact we are told to expect them. Pain, suffering, and hardship will come, but God will never forget about you.
The Lord sustains the righteous, He knows the days of the blameless. Their inheritance will be forever, unlike the temporary earthly riches of the wicked. They have no need to be ashamed in the time of evil and in the days of famine they will have abundance. God will take care of His people who are in need.
The wicked will perish eventually like the flowers in the fields and like smoke they will vanish away. We need not to be afraid of them, because the Lord is on our side and sees their day coming.
Thanks for reading, I hope it was an encouragement to you!