abraham lincoln was the president of usa and he had asked the audience to make a pledge on equality.
his pledge was:
“it is my earnest desire to know the will of the providence.”
lincoln also had hatred for people who condoned and practiced slavery and so he pledged:
""and if i can learnt what it is i can do it"" this is another pledge by abraham to reassure the congregation on how to deal with the providence will.
explanation:
hope this !