1 Timothy 3:9
having the mystery of the faith in a pure conscience.
1 Timothy 1:19
having faith and a good conscience, which some having cast away have suffered shipwreck of the faith;
1 Timothy 1:5
But the end of the commandment is love from a pure heart and good conscience and faith unfeigned,
1 Timothy 3:16
And confessedly great is the mystery of piety; [Christ,] who was manifested in the flesh, was justified in the spirit, was seen by angels, was preached to the nations, was believed on in the world, was received up into glory.
2 John 1:9-10
Every one who goes beyond, and continues not in the doctrine of Christ, is without God. He that continues in the doctrine has both the Son and the Father.