Baptizm and Present Day Salvation

If a person with an honest heart, a broken, contrite, and pure spirit, in all fervency and honesty of soul, presents himself and says he wishes to be baptized for the remission of his sins, and the ordinance is administered by one having authority, is that man saved? Yes, to that period of time. Should the Lord see proper to take him then from the earth, the man has believed and been baptized, and is a fit subject for heaven--a candidate for the kingdom of God in the Celestial world, because he has repented and done all that was required of him to that hour.

But after he is baptized and hands have been laid upon him for the reception of the Holy Ghost, suppose that on the next day he is commanded to go forth and preach the Gospel or to teach his family, or to assist in building up the kingdom of God, or to take all his substance and give it for the sustenance of the poor, and he says, "I will not to it", his baptism and confirmation would depart from him, and he would be left as a son of perdition (meaning he would be left void of the Spirit, not that the person would actually become a Son of Perdition- R. Bott, BYU). But if he says, with a willing heart and mind, "Here is my substance; I will not only pay the tenth of it, but the whole of it is at your feet; do with it as you please", does he not continue to be saved? Yes.

It is present salvation and the present influence of the Holy Ghost that we need every day to keep us on saving ground. When an individual refuses to comply with the further requirements of Heaven, then the sins he had formerly committed return upon his head; his former righteousness departs from him, and is not accounted to him for righteousness; but if he had continued in righteousness and obedience to the requirements of Heaven, he is saved all the time, through baptism, the laying on of hands, and obeying the commandments of the Lord and all that is required of him by the heavens ‑‑ the living oracles. He is saved now, next week, next year, and continually, and is prepared for the celestial kingdom of God whenever the time comes for him to inherit it.
--Brigham Young Journal of Discourses 8:124