Verses for proved them

And David girded his sword upon his armor, and he assayed to go; for he had not proved it. And David said unto Saul, I cannot go with these; for I have not proved them. And David put them off him.

So he consented to them in this matter, and proved them ten days.

And he cried unto the LORD; and the LORD showed 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,