1 Corinthians 1:18

For the discourse, [the subject of which is] the cross, is indeed to those who perish, folly; but to us who are saved it is the power of God.

1 Peter 1:6-7

Wherein ye exult, though yet for a little space, (if it must be so,) ye are in sorrow through various trials:

Treasury of Scripture Knowledge

Summary

And he cried unto the LORD; and the LORD shewed him a tree, which when he had cast into the waters, the waters were made sweet: there he made for them a statute and an ordinance, and there he proved them,

Proved

Bible References

A tree

1 Corinthians 1:18
For the discourse, [the subject of which is] the cross, is indeed to those who perish, folly; but to us who are saved it is the power of God.

Proved

1 Peter 1:6
Wherein ye exult, though yet for a little space, (if it must be so,) ye are in sorrow through various trials: