1 tn Grk “heart” (a collective singular).
2 tc Most mss have ὁ θεός (Jo qeo", “God”) as the explicit subject of ἐποίησεν (epoihsen, “he made”; A D W Θ Ψ Ë1,13 Ï lat sy), while the most important witnesses, along with a few others, lack ὁ θεός (א B C L Δ 579 2427 co). On the one hand, it is possible that the shorter reading is an assimilation to the wording of the LXX of Gen 1:27b where ὁ θεός is lacking. However, since it is mentioned at the beginning of the verse (Gen 1:27a) with ἐποίησεν scribes may have been motivated to add it in Mark to make the subject clear. Further, confusion could easily arise in this dominical saying, because Moses was the previously mentioned subject (v. 5) and inattentive readers might regard him as the subject of ἐποίησεν in v. 6. Thus, both on internal and external grounds, the most probable wording of the original text here lacked ὁ θεός.
3 sn A quotation from Gen 1:27; 5:2.
4 tc ‡ The earliest witnesses, as well as a few other important mss (א B Ψ 892* 2427 sys), lack the rest of the quotation from Gen 2:24, “and will be united with his wife.” Most mss ([A C] D [L N] W [Δ] Θ Ë,13  Ï lat co) have the clause. It could be argued that the shorter reading was an accidental omission, due to this clause and v. 8 both beginning with καί (kai, “and”). But if that were the case, one might expect to see corrections in א or B. This can be overstated, of course; both mss combine in their errors on several other occasions. However, the nature of the omission here (both its length and the fact that it is from the OT) argues that א and B reflect the original wording. Further, the form of the longer reading is identical with the LXX of Gen 2:24, but different from the quotation in Matt 19:5 (προσκολληθήσεται vs. κολληθήσεται [proskollhqhsetai vs. kollhqhsetai], πρὸς τὴν γυναῖκα vs. τῇ γυναικί [pro" thn gunaika vs. th gunaiki]). The significance of this is that Matthew’s quotations of the OT are often, if not usually, directly from the Hebrew – except when he is following Mark’s quotation of the OT. Matthew in fact only departs from Mark’s verbatim quotation of the LXX in 15:4 and 19:19, both texts quoting from Exod 20:12/Deut 5:6 (and in both places the only difference from Mark/LXX is the dropping of σου [sou, “your”]). This might suggest that the longer reading here was not part of what the first evangelist had in his copy of Mark. Further, the reading without this line is harder, for the wife is not explicitly mentioned in v. 7; the casual reader could read “the two” of v. 8 as referring to father and mother rather than husband and wife. (And Mark is known for having harder, shorter readings that scribes tried to soften by explanatory expansion: In this chapter alone, cf. the textual problems in v. 6 [the insertion of ὁ θεός]; in v. 13 [the replacement of αὐτοῖς with τοῖς προσφέρουσιν or τοῖς φέρουσιν]; in v. 24 [insertion of ἐστιν τοὺς πεποιθότας ἐπὶ χρήμασιν, πλούσιον, or τὰ χρήματα ἔχοντες; and perhaps in v. 2 [possible insertion of προσελθόντες Φαρισαῖοι or similar permutations].) Although a decision is difficult, the preferred reading lacks “and will be united with his wife.” NA27 has the longer reading in brackets, indicating doubts as to its authenticity.
5 sn A quotation from Gen 2:24. The “two” refers to husband and wife, not father and mother mentioned in the previous verse. See the tc note on “mother” in v. 7 for discussion.