4.  To the end they may be kept more watchful and circumspect, they should remember, that it is a dishonourable thing to Christ, for them to step aside, in the least matter of truth; the denying of the least point of truth is a consequential denying of him who is the truth; and to loose a foot in the matters of truth is very dangerous; for who can tell when they who once slip a foot shall recover it again?  And who can tell how many, and how dreadful errors they may drink in, who have once opened the door to a small error?  Therefore they should beware of tampering in this matter, and to admit any error, upon the account that it is a small and inconsiderable one.  There may be an unseen concatenation betwixt one error and another, and betwixt a small one and a greater one, so as if the little one be admitted and received, the greater shall follow; and it may be feared that if they once dally with error, and make a gap in their consciences, that God will give them up to judicial blindness, that, ere all be done, they shall embrace that opinion which sometime they seemed to hate as death.

5.  They should eye the promises suiting that cause; viz. the promises of God’s guiding “the blind by a way which they know not:  of making darkness light before them, and crooked things straight,” Isa. xlii. 16; and of “guiding continually,” Isa. lviii. 11; see also Isa. xlix. 10.; lvii. 18.; and they would act faith on these and the like promises, as now made sure by Jesus.

6.  Particularly, they should fix their eye upon that principal promise, of the Spirit of truth, to guide into all truth, John xvi. 13.

7.  With singleness of heart they should depend on Christ, and wait for light from him, and beware of prejudice at the truth; with singleness of heart they should lie open to his instructions, and to the influences of his light and direction, and receive in the beams of his divine light; and thus go about duties, viz. prayer, conference, preaching, reading, &c. with an eye fixed on him, and with a soul open to him, and free of all sinful pre-engagement and love to error.

8.  With singleness of heart, they should give up their souls to Christ, as the truth, that he would write the truth in their souls, and frame their souls unto the truth, and unto that truth which is most questioned, and by which they are most in hazard to be drawn away; and urge and press him by prayer and supplication to do the duty of a head, a husband, guide and commander, &c. unto them; and that he would be a light unto them in that day of darkness, and not suffer them to dishonour him or prove scandalous to others; by departing from the truth and embracing error.  A serious single-hearted dealing with him upon the grounds of the covenant promises and his relations and engagements, might prove steadable in this case, if accompanied with a lying open to the influences of truth and to the light of information which he is pleased to send by the Spirit of truth.