Jesus said, “Faith cometh not by signs, but signs follow those that believe” (D&C 63:9). In short: believe first, then see the sign.
Many who don’t believe in God claim that there is no evidence of him. But if what Jesus said is true, they’ll never find this evidence until they believe.
I’m holding an apple seed in my hand. It came from inside an apple.
If you take this seed and plant it in the ground, and if you nurture it for a long time, years perhaps, with water and sunlight, then it will produce apples. Real apples, with seeds in them like this one I’m holding. But it’s a long process.
A sign seeker is one who picks up the seed and says, “If you show me an apple from this seed, THEN I’ll know it works, and THEN I’ll make the effort to help it grow into a producing apple tree. I will be completely willing to do what it takes. But just show me an apple from this seed first.”
In the real world, nobody would ever ask to see the apple before the seed. It goes contrary to logic.
Maybe that’s why God responds this way when people expect that from him. He said, “Signs come by faith, unto mighty works, for without faith no man pleaseth God; …wherefore, unto such he showeth no signs, only in wrath unto their condemnation” (D&C 63:11).
An apple really can grow from this seed. But there’s only one way to find evidence of this.