'Valid' in the Bible

The Pharisees told him, "You're testifying about yourself. Your testimony isn't valid."

Jesus answered them, "Even though I'm testifying about myself, my testimony is valid because I know where I've come from and where I'm going. But you don't know where I come from or where I'm going.

Yet even if I should judge, my judgment would be valid, because it is not I alone who judges, but I and the one who sent me.

In your own Law it is written that the testimony of two people is valid.

Therefore, as long as the promise of entering his rest remains valid, let us be afraid! Otherwise, some of you will fail to reach it,