Entering into Rest requires Faith...another name for faith is Trust...Hebrews 4 says that people enter not into God's rest because of unbelief... and that is opposite of trust. Unbelief causes a hardened heart.

Lyrics

REST
Is not laziness
It is trust

REST
Is not striving
It is “letting God”

REST
It is being still enough
to hear his still small voice

REST
Only possible, as I let go of my agenda

REST
Is the opposite spirit of the world
In which we live

For it’s TRUST

God
Can do what "He says" HE can do

I
Can do what "He says" I can do

God
Is the One He says He is
and He declares to be “I AM”
And God has created me
So I am WHO "He says" I am
Therefore, I REST
In the knowing that
He is the One
In Control
Over all

This is Trust
This is Rest
Trust IS Rest