1 Corinthians 7:4

7:4 It is not the wife who has the rights to her own body, but the husband. In the same way, it is not the husband who has the rights to his own body, but the wife.

1 Corinthians 7:10-12

7:10 To the married I give this command – not I, but the Lord ¹  – a wife should not divorce a husband 7:11 (but if she does, let her remain unmarried, or be reconciled to her husband), and a husband should not divorce his wife.

7:12 To the rest I say – I, not the Lord ²  – if a brother has a wife who is not a believer and she is happy to live with him, he should not divorce her.

[7:10]  ¹ sn Not I, but the Lord. Here and in v. 12 Paul distinguishes between his own apostolic instruction and Jesus’ teaching during his earthly ministry. In vv. 10-11, Paul reports the Lord’s own teaching about divorce (cf. Mark 10:5-12).

[7:12]  ² sn I, not the Lord. Here and in v. 10 Paul distinguishes between his own apostolic instruction and Jesus’ teaching during his earthly ministry. In vv. 12-16, Paul deals with a situation about which the Lord gave no instruction in his earthly ministry.