Cross reference
1 Corinthians 7:6
6 But this I say by way of concession, not of commandment.
2 Corinthians 8:8
8 I speak not by way of commandment, but as proving through the earnestness of others the sincerity also of your love.
1 Corinthians 7:12
12 But to the rest say I, not the Lord: If any brother hath an unbelieving wife, and she is content to dwell with him, let him not leave her.
1 Corinthians 7:25
25 Now concerning virgins I have no commandment of the Lord: but I give my judgment, as one that hath obtained mercy of the Lord to be trustworthy.
2 Corinthians 11:17
17 That which I speak, I speak not after the Lord, but as in foolishness, in this confidence of glorying.
