I agree. Good post.
God did rest, or cease, from the work of creating, but He did not cease from all work.
Jesus, on the Sabbath day, said:
"My Father is always at His work to this very day, and I, too, am working." -- (John 5:16-17).
When God ceased from the work of His physical creation, His attention was then focused on the work of Man's salvation, a work which Christ continues to do to this very day.
I tend to think of God's Sabbath rest as a transition from one form of work to another form of work. From physical work to spiritual work. From the work of physical creation to the work of Man’s salvation. God ceased from the physical but continued to work in the spiritual.
Likewise, when we enter God’s Sabbath rest we also make this same transition from physical work to spiritual work, just as God did. We permanently cease from the physical work of our human nature (the fleshly works of sin) while focusing our attention on the spiritual work of our salvation, where we work with God in working out our salvation:
Continue to work out your salvation with fear and trembling, for it is God who works in you both to will and to do according to His good purpose. -- (Philippians 2:12-13).
When we enter God's Sabbath rest we permanently cease from the physical so that we may permanently work in the spiritual:
For when we were controlled by the sinful nature, the sinful passions which were aroused by the law were at work in our bodies to bear fruit to death. But now we have been delivered from the law, having died to what we were held by, so that we should serve in the new way of the Spirit and not in the old way of the letter. -- (Romans 7:5-6).