The six Psalms 113-118 are known as the "Egyptian Hallel". Psalm 113 is an introductory Psalm that could be divided into three sections as below.
• Praise Unbounded - There is no limit how much we can praise our God. God wants us to praise Him from morning till evening and forevermore.
• God Unconfined - Let's not limit God with what we know, but allow God to work in and through our lives without any restrictions. ----more----
• Favor Undeserved - Let God raise us from our situation to a much higher leave that we don't even deserve. Let His favor remove the barrenness that is in our lives and produce more natural and spiritual children.
Here is the one line summary of Psalm 113 - When we raise Unbounded Praises to the Unconfined God, we will see the Undeserved Favor coming upon His People.