We have reason

1. Alma 24: 26
     26 And it came to pass that the people of God were joined that day by more than the number who had been slain; and those who had been slain were righteous people, therefore we have no reason to doubt but what they were saved.
2. Alma 26: 14
     14 Yea, we have reason to praise him forever, for he is the Most High God, and has loosed our brethren from the chains of hell.
3. Hel. 5: 8
     8 And now my sons, behold I have somewhat more to desire of you, which desire is, that ye may not do these things that ye may boast, but that ye may do these things to lay up for yourselves a treasure in heaven, yea, which is eternal, and which fadeth not away; yea, that ye may have that precious gift of eternal life, which we have reason to suppose hath been given to our fathers.