Cross reference
2 Samuel 3:26
26 When Joab was come out from David, he sent messengers after Abner, and they brought him back from the well of Sirah: but David didn't know it.
Proverbs 26:23-26
23 Like silver dross on an earthen vessel Are the lips of a fervent one with an evil heart.
24 A malicious man disguises himself with his lips, But he harbors evil in his heart.
25 When his speech is charming, don't believe him; For there are seven abominations in his heart:
26 His malice may be concealed by deception, But his wickedness will be exposed in the assembly.
Proverbs 27:4-6
4 Wrath is cruel, And anger is overwhelming; But who is able to stand before jealousy?
5 Better is open rebuke Than hidden love.
6 Faithful are the wounds of a friend; Although the kisses of an enemy are profuse.