A striking illustration of this is found in Isa. vi. 8-10, “Also I heard the voice of the Lord, saying, Whom shall I send, and who will go for us? Then said I, Here am I; send me. And He said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not. Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their heart, and convert and be healed.” In verse five we are told that it was Jehovah (whenever the word LORD is spelled in capitals in the Old Testament, it stands for Jehovah in the Hebrew and is so rendered in the American Revision) whom Isaiah saw and who speaks. But in Acts xxviii. 25-27 there is a reference to this statement of Isaiah’s and whereas in Isaiah we are told it is Jehovah who speaks, in the reference in Acts we are told that it was the Holy Spirit who was the speaker. The passage in Acts reads as follows, “And when they agreed not among themselves, they departed after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers, saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see and not perceive: For the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them.” So we see that what is distinctly ascribed to Jehovah in the Old Testament is ascribed to the Holy Spirit in the New: _i. e._, the Holy Spirit is identified with Jehovah. It is a noteworthy fact that in the Gospel of John, the twelfth chapter and the thirty-ninth to forty-first verses where another reference is made to this passage in Isaiah, this same passage is ascribed to Christ (note carefully the forty-first verse). So in different parts of Scripture, we have the same passage referred to Jehovah, referred to the Holy Spirit, and referred to Jesus Christ. May we not find the explanation of this in the threefold “Holy” of the seraphic cry in Isaiah vi. 3, where we read, “And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of His glory.” In this we have a distinct suggestion of the tri-personality of the Jehovah of Hosts, and hence the propriety of the threefold application of the vision. A further suggestion of this tri-personality of Jehovah of Hosts is found in the eighth verse of the chapter where the Lord is represented as saying, “Whom shall I send, and who will go for _us_?”