Isaiah 55:11

My word. The words of God represent His will and are endowed with power to make that will effective. They have power to create (Gen. 1:3; Ps. 33:6, 9), to impart spiritual energy, life, and blessing (Deut. 8:3; Matt. 4:4; Rev. 1:3), to judge and to condemn (Heb. 4:12; Rev. 19:15), to raise men from the grave (Job 14:14, 15; John 11:43,44; 1 Thess. 4:16), and to heal and redeem (Matt. 9:2, 6; Mark 2:5, 9-12; John 5:24; 6:63).

That which I please. As with the rain and the snow (v. 10), so with the “word” — all accomplish the beneficent purpose that gave them being. Thus it was also with Christ, the living Word (John 1:1), in whose hands “the pleasure of the Lord” was to “prosper” (see on Isa. 53:10).