John Gill Commentary 1 Kings 14:6

"And it was so, when Ahijah heard the sound of her feet, as she came in at the door, that he said, Come in, thou wife of Jeroboam; why feignest thou thyself to be another? for I am sent to thee with heavy tidings." — 1 Kings 14:6 (ASV)

And it was so, when Ahijah heard the sound of her feet, as she came in at the door Of the room where the prophet was:

that he said, come in, you wife of Jeroboam, why feignest yourself to be another ? which must greatly surprise and confound her, as well as lay open to her the folly of her and her husband to imagine that she could be secreted from God, and a prophet of his; or that a prophet could tell her what was future, and yet not know her that was present; and this might serve to assure her, and so her husband, that what the prophet after delivered would certainly come to pass:

for I am sent to you with heavy tidings ; or hard things, such as would be very disagreeable to her and her husband.