God owns us in two ways. First, he created us (Genesis 1:27). Second, he bought us from bondage to sin through the finished work of Jesus Christ on the cross (Ephesians 1:7, Galatians 3:13). He is our Lord in new birth and he is our God in creation. These glorious truths are inseparable.
We submit to him as Lord because we see him as amazing, beautiful, glorious, and wonderful. We, as his creation, are to reflect his beauty and his glory. We are to love him, thank him and trust him. We see him worthy of all our praises and adoration.
He is sovereign. He is mighty. He is powerful.
For many people, he is not wonderful or beautiful. The idea of a glorious God is a foreign thing to them. We were once like that, but God overcame that rebellion and shone in our hearts "the light of the knowledge of the glory of God in the face of Jesus Christ" (2 Corinthians 4:6).
Now, we see beauty and glory and wonders. We were made new. All because God "created all things", even the faith that we need to obey him comes from him.
He is sovereign. He is mighty. He is powerful. In Christ, he is for us and not against us. In Christ, he is our father. We are his sons and daughters. He is worthy.