Omni 1:26

26 And now, my beloved brethren, I would that ye should come unto Christ, who is the Holy One of Israel, and partake of his salvation, and the power of his redemption. Yea, come unto him, and offer your whole souls as an offering unto him, and continue in fasting and praying, and endure to the end; and as the Lord liveth ye will be saved.

2 Nephi 31:13/19-20

13 Wherefore, my beloved brethren, I know that if ye shall follow the Son, with full purpose of heart, acting no hypocrisy and no deception before God, but with real intent, repenting of your sins, witnessing unto the Father that ye are willing to take upon you the name of Christ, by baptism—yea, by following your Lord and your Savior down into the water, according to his word, behold, then shall ye receive the Holy Ghost; yea, then cometh the baptism of fire and of the Holy Ghost; and then can ye speak with the tongue of angels, and shout praises unto the Holy One of Israel.

19 And now, my beloved brethren, after ye have gotten into this strait and narrow path, I would ask if all is done? Behold, I say unto you, Nay; for ye have not come thus far save it were by the word of Christ with unshaken faith in him, relying wholly upon the merits of him who is mighty to save.
20 Wherefore, ye must press forward with a steadfastness in Christ, having a perfect brightness of hope, and a love of God and of all men. Wherefore, if ye shall press forward, feasting upon the word of Christ, and endure to the end, behold, thus saith the Father: Ye shall have eternal life.

1 Nephi 13:37

37. And blessed are they who shall seek to bring forth my Zion at that day, for they shall have the gift and power of the Holy Ghost; and if they endure unto the end, they shall be lifted up at the last day, and shall be saved in the everlasting kingdom of the Lamb; and whoso shall publish peace, yea, tidings of great joy, how beautiful upon the mountains shall they be.

D&C 122:5-8

5. If thou art called to pass through tribulation; if thou art in perils among false brethren; if thou art in perils among robbers; if thou art in perils by land or by sea;
6. If thou art accused with all manner of false accusations; if thine enemies fall upon thee; if they tear thee from the society of thy father and mother and brethren and sisters; and if with a drawn sword thine enemies tear thee from the bosom of thy wife, and of thine offspring, and thine elder son, although but six years of age, shall cling to thy garments, and shall say, My father, my father, why can't you stay with us? O, my father, what are the men going to do with you? and if then he shall be thrust from thee by the sword, and thou be dragged to prison, and thine enemies prowl around thee like wolves for the blood of the lamb;
7. And if thou shouldst be cast into the pit, or into the hands of murderers, and the sentence of death be passed upon thee; if thou be cast into the deep; if the billowing surge conspire against thee; if fierce winds become thine enemy; if the heavens gather blackness, and all the elements combine to hedge up the way; and above all, if the very jaws of hell shall gape open the mouth wide after thee, know thou, my son, that all these things shall give thee experience, and shall be for thy good.
8. The Son of Man hath descended below them all. Art thou greater than he?

D&C 14:7

7. And, if ye keep my commandments and endure to the end ye shall have eternal life, which gift is the greatest of all the gifts of God.