Matthew 10:16

"Behold, I send you out as sheep in the midst of wolves. Therefore be wise as serpents and innocent as doves.

Romans 16:18-19

For such persons do not serve our Lord Christ, but their own appetites, and by smooth and flattering words they deceive the hearts of the simple.

Treasury of Scripture Knowledge

Summary

And with Absalom went two hundred men out of Jerusalem, that were called; and they went in their simplicity, and they knew not any thing.

Their simplicity

Bible References

Their simplicity

Matthew 10:16
"Behold, I send you out as sheep in the midst of wolves. Therefore be wise as serpents and innocent as doves.
Romans 16:18
For such persons do not serve our Lord Christ, but their own appetites, and by smooth and flattering words they deceive the hearts of the simple.