God would not have us always occupied with the manifestation of His grace to us in salvation—blessed as that is. He would have us able to receive communications of what He Himself is. Many things hinder this. Not perhaps sinful things. It may be even activity for Christ: one might be so occupied with their work as to hinder this communion. This activity ought to flow from communion—being so filled with what Christ is, that we must tell it out to others.
But, besides this, there are our failures, and God has to make them known to us; and to make us see what grace is in respect of such: yet this is not communion:
It is when we have such a communication of what He is poured into our souls, that we are led to exclaim “What a God Thou art!”