By Christ’s example.
I prefer the objectivity of the Word of God and Scripture to the subjectivity of your statement “By Christ’s example”. Sola Scriptura goes against scripture and it is a contradiction in logic.
<< 2 Thessalonians 2:15 >>
New International Version (©1984)
So then, brothers, stand firm and hold to the teachings we passed on to you, whether by word of mouth or by letter.