It seems to me most of these situations are basic "if you will, then I will" conditional phrases. I don't think you've made the case of why this would violate God's omniscience. When you take Scripture as it stands, you must take all of it. We can find verses and sections of Scripture that appear to teach falling from grace, baptismal salvation, salvation by works, etc., etc., but we must also compare Scripture with Scripture to get the whole picture. IMO, that is what you are failing to do by isolating the verses on God's repentance.
And for the record, Bro. Mark, I learned my belief in God's omniscience from Sunday School to adulthood in a church that was and is in affiliation with the same association with which you are affiliated. You may believe I am wrong, and that is OK. But there was not and is not now a Calvinist among that body of baptized believers. This is not an issue of Calvinism vs. something else, as far as I have ever known.
And for the record, Bro. Mark, I learned my belief in God's omniscience from Sunday School to adulthood in a church that was and is in affiliation with the same association with which you are affiliated. You may believe I am wrong, and that is OK. But there was not and is not now a Calvinist among that body of baptized believers. This is not an issue of Calvinism vs. something else, as far as I have ever known.