I. What were the causes of this sin. How came the people of God to be drawn away to the service of idols? How came a virgin so well taught, so well educated, to be debauched? Who would have thought it? But, 1. They grew proud (v. 15): "Thou trustedst to thy beauty, and didst expect that that should make thee an interest, and didst play the harlot because of thy renown." They thought, because they were so complimented and admired by their neighbours, that, further to ingratiate themselves with them and return their compliments, they must join with them in their worship and conform to their usages. Solomon admitted idolatry, to gratify his wives and their relations. Note, Abundance of young people are ruined by pride and particularly pride in their beauty. Rara est concordia formæ atque pudicitiæ—Beauty and chastity are seldom associated 2. They forgot their beginning (v. 22) "Thou hast not remembered the days of thy youth, how poor, and mean, and despicable thou wast, and what great things God did for thee and what lasting obligations he laid upon thee thereby." Note, It should be an effectual check to our pride and sensuality to consider what we are and how much we are beholden to the free grace of God. 3. They were weak in understanding and in resolution (v. 30): How weak is thy heart, seeing thou dost all these things. Note, The strength of men's lusts is an evidence of the weakness of their hearts; they have no acquaintance with themselves, nor government of themselves. She is weak, and yet an imperious whorish woman. Note, Those that are most foolish are commonly most imperious, and think themselves fit to manage others when they are far from being able to manage themselves.