Psalms 78:36

Nevertheless they did flatter him with their mouth -The word rendered “flatter” means properly “to open;” and hence, “to be open; to be ingenious or frank;” and then, to be easily persuaded, to be deluded, to be beguiled; and hence, also, in an active form, to persuade, to entice, to seduce, to beguile, to delude. The meaning here is, that they attempted to deceive by their professions, or that their professions were false and hollow. Those professions were the mere result of affliction. They were based on no principle; there was no true love or confidence at the foundation. Such professions or promises are often made in affliction.