Answer:
I feel as if the way the phrase is more a question.
personally i think this might have persuaded them to join the movement because for one the pose of the man in the picture. it looks as if hes begging or wanting people to forgive him. The abolitionists saw slavery as an abomination and an affliction on the United States, making it their goal to eradicate slave ownership. I think hes trying to get the people to want to end slavery.
Inspired by a strategy known as “moral suasion,” these young abolitionists believed they could convince slaveholders to voluntarily release their slaves by appealing to the their sense of Christian conscience. The result would be national redemption and moral harmony.