15 If ye love me, keep my commandments.
16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
18 I will not leave you comfortless: I will come to you.
19 Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
20 At that day ye shall know that I am in my Father, and ye in me, and I in you.
21 He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
22 Judas saith unto him, not Iscariot, Lord, how is it that thou wilt manifest thyself unto us, and not unto the world?
23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.
Believing in the Lord is not merely acknowledging Him but also doing His commandments; for simply acknowledging Him is solely a matter of thought, arising from somewhat of the understanding; but doing His commandments is also a matter of acknowledgment from the will.
Man’s mind consists of understanding and will; and as the understanding deals with thinking and the will with doing, so when man’s acknowledgment is merely from the thought of the understanding he comes to the Lord with only half of his mind; but when there is doing he comes with all of it; and this is to believe. But on the other hand, man is able to divide his heart, and to force the outermost of his nature to soar aloft, the flesh in him meanwhile turning downward; thus he flies like an eagle between heaven and hell. And yet, the man himself does not follow his [upward] look, but the delight of his flesh; and this he does because he is in hell; therefore to hell he flies; and when he has there sacrificed to his voluptuous pleasures and poured out libations to demons, he puts on a countenance of merriment, and his eyes sparkle with fire, and so he feigns himself an angel of light. Such satans do those become after death who acknowledge the Lord but do not keep His commandments.