Summary: God is good and powerful that, even though we fought Him tooth and nail, He still saved us, cleansed us and now transforms us into His character. That wonderful work is something to behold, and the riches we receive are incredible.
Psalm 112 (quickview)  is about the character of people who have submitted themselves to be led by God. It follows on the heels of Psalm 111 (quickview)  which reveals the character of our God. In that psalm God is described as gracious and compassionate, a provider, Someone who makes promises and keeps them faithfully, and One who acts with truth and justice. This psalm is how those characteristics are worked out in those that belong to God. Psalm 112 (quickview)  also encouraged us to “fear the Lord” which is a combination of actual fear of God’s holiness, but then reverential awe for a God so holy who can wash away that which makes us impure.
It begins with the “Hallelujah” of the hallelujah psalms. Everything hinges on these two aspects of submission: you are blessed or happy if you 1) fear the Lord and 2) taking delight in His Word. You believe that God is who He says He is and that His character and will are revealed in His Word. It doesn’t get much more basic than that.
The rest of the psalm details the results of a relationship with Yahweh. For those who have a relationship with God through Jesus Christ, our characters are being changed bit by bit into His.
2Cor. 3:18 We all, with unveiled faces, are looking as in a mirror at the glory of the Lord and are being transformed into the same image from glory to glory; this is from the Lord who is the Spirit.
So through our relationship with God through Jesus, our character is being changed to mirror the character of what we see in these verses:
God’s power will flow through those that love Him. Acts 1:8 (quickview) : “But you will receive power [dunamis: ability] when the Holy Spirit has come on you, and you will be My witnesses in Jerusalem, in all Judea and Samaria, and to the ends of the earth.”
God will richly bless those that love Him. It doesn’t mean financially necessarily. I think it primarily means rich in the character of God—righteousness that will never go away. This reminds me of the story of the pearl of great price in Matthew 13 (quickview) . The pearl represented the knowledge of the kingdom of God in the gospel, and the knowledge of the grace of God through Christ (Ephesians 2:7 (quickview) ).
No matter the difficulty we find ourselves in, God’s presence is light. God is known as One who shines grace into the dark abyss of sin that is this world. I think this also speaks of clarity. Shining light in the darkness means exposing something for what it really is. Darkness means we stumble around ignorant. But light means we see clearly.
Acts 26:18 (quickview)  “… to open their eyes so they may turn from darkness to light and from the power of Satan to God, that by faith in Me they may receive forgiveness of sins and a share among those who are sanctified.”