These words also show us, that this water of itself can do without a mixture of anything of ours. What comes from this throne of grace is pure grace, and nothing else; clear grace, free grace, grace that is not mixed, nor need be mixed with works of righteousness which we have done; it is of itself sufficient to answer all our wants, to heal all our diseases, and to help us at a time of need. It is grace that chooses, it is grace that calleth, it is grace that preserveth, and it is grace that brings to glory: even the grace that like a river of water of life proceedeth from this throne. And hence it is, that from first to last, we must cry, ‘Grace, grace unto it!’
Thus you see what a throne the Christian is invited to; it is a throne of grace whereon doth sit the God of all grace; it is a throne of grace before which the Lord Jesus ministereth continually for us; it is a throne of grace sprinkled with the blood, and in the midst of which is a Lamb as it had been slain; it is a throne with a rainbow round about it, which is the token of the everlasting covenant, and out of which proceeds, as here you read, a river, a pure river of water of life, clear as crystal. Look then for these signs of the throne of grace, all you that would come to it, and rest not, until by some of them you know that you are even come to it; they are all to be seen have you but eyes; and the sight of them is very delectable, and has a natural tendency in them, when seen, to revive and quicken the soul.
The Throne of Grace