For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens. Mercy shall be built up for ever - God's goodness is the foundation on which his mercy rests; and from that source, and on that foundation, acts of mercy shall flow and be built up for ever and ever.
Thy faithfulness shalt thou establish - What thou hast promised to do to the children of men on earth, thou dost register in heaven, and thy promise shall never fail.