What he has seen and heard, of that he testifies; and no one receives his witness.
      (4.) He owns it highly fit and necessary that the reputation and interest of Christ should be advanced, and his own diminished (John 3:30; John 3:30): He must increase, but I must decrease. If they grieve at the growing greatness of the Lord Jesus, they will have more and more occasion to grieve, as those have that indulge themselves in envy and emulation. John speaks of Christ's increase and his own decrease, not only as necessary and unavoidable, which could not be helped and therefore must be borne, but as highly just and agreeable, and affording him entire satisfaction. [1.] He was well pleased to see the kingdom of Christ getting ground: "He must increase. You think he has gained a great deal, but it is nothing to what he will gain." Note, The kingdom of Christ is, and will be, a growing kingdom, like the light of the morning, like the grain of mustard-seed. [2.] He was not at all displeased that the effect of this was the diminishing of his own interest: I must decrease. Created excellencies are under this law, they must decrease. I have seen an end of all perfection. Note, First, The shining forth of the glory of Christ eclipses the lustre of all other glory. The glory that stands in competition with Christ, that of the world and the flesh, decreases and loses ground in the soul as the knowledge and love of Christ increase and get ground; but it is here spoken of that which is subservient to him. As the light of the morning increases, that of the morning star decreases. Secondly, If our diminution or abasement may but in the least contribute to the advancement of Christ's name, we must cheerfully submit to it, and be content to be any thing, to be nothing, so that Christ may be all.