A.T. Robertson Commentary 1 Corinthians 7:3

"Let the husband render unto the wife her due: and likewise also the wife unto the husband." — 1 Corinthians 7:3 (ASV)

Render the due (την οφειλην αποδιδοτω). Marriage is not simply not wrong, but for many a duty. Both husband and wife have a mutual obligation to the other. "This dictum defends marital intercourse against rigorists, as that of ver. 1 commends celibacy against sensualists" (Findlay).