Lincoln's Second Inaugural wasn't until 1865 and his address contained no such promise. It did, however, say:
"With malice toward none, with charity for all, with firmness in the right as God gives us to see the right, let us strive on to finish the work we are in, to bind up the nation's wounds, to care for him who shall have borne the battle and for his widow and his orphan, to do all which may achieve and cherish a just and lasting peace among ourselves and with all nations."
Further, if the author is comparing Baraq I to Lincoln, he might have also noted this passage from Lincoln's Second Inaugural Address:
"It may seem strange that any men should dare to ask a just God's assistance in wringing their bread from the sweat of other men's faces, but let us judge not, that we be not judged.
Barak I might do well to note those words. Though spoken in the context of slavery, the unfair redistribution of honest gains from one person to another seems to once again be in style.
Was it a coincidence that this (plagiarized) speech by theOne was delivered on the date set aside to honor MLK?