2 John 1:4

(2) I rejoiced greatly that I found of thy children walking in (d) truth, as we have received a commandment from the Father.

(2) This true profession consists both in love towards one another which the Lord has commanded, and also especially in wholesome and sound doctrine, which also is delivered to us: for the commandment of God is a sound and sure foundation both of the rule of conduct and of doctrine, and these cannot be separated from one another,

(d) According as the truth directs them.