Romans 16:18

For such men are really not serving our Lord Christ but their own base appetites, and by their fair and flattering talk they are deceiving the hearts of unsuspecting people.

James 1:8

(1:7) unreliable in every step he takes, must not expect to get anything from the Lord.

1 Thessalonians 2:5

Indeed, we never resorted to flattery, as you are well aware, nor to any pretext for making money; God is our witness.

Treasury of Scripture Knowledge

Summary

They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.

General references

Bible References

Flattering

Romans 16:18
For such men are really not serving our Lord Christ but their own base appetites, and by their fair and flattering talk they are deceiving the hearts of unsuspecting people.
1 Thessalonians 2:5
Indeed, we never resorted to flattery, as you are well aware, nor to any pretext for making money; God is our witness.

General references

Acts 12:22
and the people shouted, "It is a god's voice, not a man's!"