'Understand' in the Bible

Now as to things which have been sacrificed to idols. This is a subject which we already understand--because we all have knowledge of it. Knowledge, however, tends to make people conceited; it is love that builds us up.

For this reason I would have you understand that no one speaking under the influence of The Spirit of God ever says, "Jesus is accursed," and that no one is able to say, "Jesus is Lord," except under the influence of the Holy Spirit.