God is One, and has always been One.
It is we humans who have to become One.
This is when we realize that tawhid (Unity) is not just about God, but about our own hearts becoming One and unified.
We have to become One, become united.
Our inner division, being disconnected from our own bodies, our own breath, our own heart is only one part of our lack of unity.
That inner division is reflected in how we as a human community are divided. When we are not one with our own heart, we cannot see the full humanity of others.
The inner and the outer are reflected in each other.
When we are internally divided, we will be externally divided.
If we wish to be united as a human community, we have to strive for unity and healing at the heart level.
We need the prayer of the heart.
By whatever form we pray, we need to become whole.