“You have multiplied, O Lord my God, your wondrous deeds and your thoughts toward us; none can compare with you! I will proclaim and tell of them, yet they are more than can be told.” -Psalm 40:5
In the previous verses, trust is the key theme, and verse five is how that trust is built. Trust grows as we reflect on and remember the wondrous thoughts (literally, plans for us existing in the mind of God) and deeds (works of God born out of those thoughts) of God.
God is not stingy with his works; but they are too numerous to count. John says as much about the works of Jesus, the second person of the Godhead incarnate: “Now there are also many other things that Jesus did. Were every one of them to be written, I suppose that the world itself could not contain the books that would be written.” -John 21:25
Cross reference this with John’s earlier assertion that “…Jesus did many other signs in the presence of the disciples, which are not written in this book; but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.” -John 20:30–31
When the Psalmist uses the expression “You have multiplied,” he is saying God has abundantly advanced his good works (i.e., blessings) toward us who trust in him to the degree that non can compare. Who has been as good to mankind as the Creator and Redeemer?
Man left to himself is proud and go astray after a lie (vs. 4). And, although it’s preposterous and outrageous, men blame God for the pain and suffering he creates for himself by not trusting God, by pridefully pursuing a lie.
Therefore, as we reflect on God’s abundant goodness toward us, let us join the Psalmist and proclaim his goodness to the world. Let us tell of his wondrous thoughts and deeds multiplied toward us. They are more abundant than can ever be told, so we shouldn’t ever run out of things for which to praise God and testify on his behalf. This is how trust begins.