Love the LORD your God with all your heart and with all your soul and with all your strength.
Matthew and Luke add: "and with all your mind" at the end.
Mark adds: "and with all your mind" before "and with all your strength".
John does not mention it.
What do you think the classic apologist's approach would be here? Obviously, they will be careful to respect the inspired texts and distinguish Mark's moment as separate from the Matthew and Luke accounts. But they will have harder work regarding this mind business, which is consistently added to this all-important Old Testament passage.
Obviously I am also interested if readers have considered that Jesus might not have been pointing these experts of the Law to love Himself. Many Trinitarians would not feel bound by that.
On the addition of "and with all your mind", rather than go through the details and options here, let me just point directly to the article I found that shows how this "addition" may have come about in the Greek.