There are many who say

1. Alma 32: 17
     17 Yea, there are many who do say: If thou wilt show unto us a sign from heaven, then we shall know of a surety; then we shall believe.
2. Morm. 8: 31
     31 Yea, it shall come in a day when there shall be great pollutions upon the face of the earth; there shall be murders, and robbing, and lying, and deceivings, and whoredoms, and all manner of abominations; when there shall be many who will say, Do this, or do that, and it mattereth not, for the Lord will uphold such at the last day. But wo unto such, for they are in the gall of bitterness and in the bonds of iniquity.
3. D&C 105: 8
     8 But I speak concerning my churches abroad—there are many who will say: Where is their God? Behold, he will deliver them in time of trouble, otherwise we will not go up unto Zion, and will keep our moneys.