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.

1 Thessalonians 2:5

For, as you know, we never used flattery nor a pretext for greed God is witness

2 Peter 2:2-3

And many will follow their licentiousness, and because of them the way of truth will be reviled.

Treasury of Scripture Knowledge

Summary

For there shall be no more any vain vision nor flattering divination within the house of Israel.

Bible References

General references

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.
1 Thessalonians 2:5
For, as you know, we never used flattery nor a pretext for greed God is witness
2 Peter 2:2
And many will follow their licentiousness, and because of them the way of truth will be reviled.