Let's consider "this day", as we apply the origional meaning of "made". This day (or today) was "made" by the Lord ... that is, He prepared, fashioned, offered, ordained, accomplished, observed, put in order, and appointed this day to be used by us (honorably, of course). When I consider these meanings of the word "made", I fully comprehend that God, beyond a shadow of a doubt, has a divine plan for you and for me, today, as well as everyday!
Now let's look at the word "rejoice". Here the Psalmist declares we (you and I), by the meaning of this word "rejoice", will find ourselves to be joyful, glad, delighted, and we will exult (which, from the American Heritage Dictionary, means to rejoice greatly, to be jubilant or triumphant, to leap upward, especially for joy. I'd say the word "rejoice" tells us we are, daily, to be extremely grateful and overjoyed in our walk with God.
Ok, now let's take a look at what God wants us to understand about being "glad". Basically, the meaning of "glad" is the same as the meaning of "rejoice", with the added word "merry". Merry, from the American Heritage Dictionary, means: full of high-spirited gaiety, jolly, offering fun, delightful, festive, and entertaining.
Now let's bring this together, seeing it from God's point of view. God is telling us He desires that we spend our days full of the joy that He imparts to us, by His Holy Spirit, and that we find our delight in Him, living a life triumphant and victorious, and having a jolly, fun time doing so ... recognizing that our Heavenly Father fashioned and ordained this day, and that it was put in order by Him. He wants us to understand that this day was appointed by Him, to be used by us ... wisely, of course. When I consider all that is being said here, in regards to how God desires you and me to live daily, I can only conclude that most of us need to pursue the Potter (God), and allow Him the freedom to work within our hearts, so that we might become an honorable vessel in His Kingdom, reaching that very place of maturity He so desires for each one of us.
Let's pray. Father, I pray we, Your children, open our hearts to You, and allow You to bring about the needed change of heart within each of us, so that we might truly rejoice, and be glad in this day that You have made, and in the days to come. I pray this in the name of Your precious Son, Jesus ... Amen.
The Lord's love and blessings to each of you! Marcia