Timothy and Epaphroditus demonstrated the mind of Christ in the way they lived.
God has always been with his people, in various ways and temporarily in Old Testament times and later and permanently in human flesh.
It’s one thing to say we believe, another to demonstrate it with what we do with our possessions and our abilities.
In Stephen's speech before the Jewish Council, he gave a master class on the meaning of Old Testament history, which culminated in Jesus.