"The Word" in this passage is the Lord.
As the Father has life in Himself, so has he given the Son to have life in Himself (Jn 5:26).
From the following it is clear that man is led and taught by the Lord alone:
Without Me you can do nothing (Jn 15:5).
A man cannot receive anything unless it is given him from heaven (Jn 3:27).
A man cannot make one hair white or black (Mt 5:36).
By "hair" in the Word the least of all is signified.
160. It will be shown in what follows in an article of its own that the life of the wicked has the same source; now this will merely be illustrated by a comparison. Heat and light flow in from the sun of the world alike to trees bearing bad fruit and to trees bearing good fruit, and they are alike quickened and grow. The forms into which the heat flows make the difference, not the heat in itself. It is the same with light, which is turned into various colors according to the forms into which it flows. The colors are beautiful and gay or ugly and sombre, and yet it is the same light. It is so with the influx of spiritual heat which in itself is love, and with spiritual light which in itself is wisdom, from the sun of the spiritual world. The forms into which they flow cause diversity, but not in itself that heat which is love or that light which is wisdom. The forms into which these flow are human minds. It is clear from these considerations that man is led and taught by the Lord alone.
161. What the life of animals is, however, was shown above (nn. 74, 96), namely that it is a life of merely natural affection with its attendant knowledge, and a mediated life corresponding to the life of human beings in the spiritual world.
162. (ii) Man is led and taught by the Lord alone through the angelic heaven and from it. We say "through" the angelic heaven and from it, but that He does so "through" the angelic heaven is the apparent fact, while "from it" is the reality. The Lord seems to lead and teach through the angelic heaven because He appears above that heaven as a sun, but the reality is that He does so from heaven because He is in heaven as the soul is in man. For the Lord is omnipresent and not in space, as was shown above. Therefore distance is an appearance according to conjunction with Him, and the conjunction is according to the reception of love and wisdom from Him. Since no one can be conjoined to the Lord as He exists in Himself He appears to angels at a distance as a sun; nevertheless He is in the angelic heaven as the soul is in man. He is similarly in every society of heaven and in every angel, for man's soul is not only the soul of man as a whole but also of every part of him.