God reminds us who He is because we are creatures, the product of His creation, and we could not understand God without Him revealing Himself to us. We also could not understand purpose in our lives apart from the God who made us. And it turns out that He made us for a special purpose.
Among the various revelations that can be read in the various books that we consider Scripture is the revelation of a God who created humankind in His own image. We reflect many of the characteristics of the God who fashioned us. Perhaps of greatest significance is the ability He has given us to direct our own wills.
We can choose to see and relate to God for who He is. We can choose to be the captains of our own souls. We can either commit ourselves to our God and Maker, or we can choose to go our own ways. If we choose to go our own ways, however, we go it alone, without the blessing or sustaining grace of the God who made us.
“Return to me, for I have redeemed you,” says God through Isaiah. (Is. 44:22) The God who gave us this capacity to accept or reject Him, calls us to Himself.
In the end, God is all that we could want, all that we are made for and all that we need. In Him is love and peace and eternal life. He is reminding us who He is. Our destiny rests on our willingness to grasp this reality and to submit ourselves to it.
We will not need to be told to “sing for joy….” (Is. 44:23) when we do submit and yield to our Maker because in Him is our joy. It is the natural expression of the child returning home to her Father. God is who He says, and God reminds us who He is in His lovingkindness.