The eyes of His enemies were continually observing Him. They watched for His halting, and waited eagerly for some word or deed on which they could lay hold, and build an accusation. Yet they found none. Our blessed Lord was ever holy, harmless, undefiled, and separate from evil. Perfect indeed must that life have been, in which the bitterest enemy could find no flaw, or blemish, or spot, or wrinkle, or any such thing!
He that desires to serve Christ must make up his mind to be “watched” and observed, no less than his Master. He must never forget that the eyes of the world are upon him, and that the wicked are looking narrowly at all his ways. Specially ought he to remember this when he goes into the society of the unconverted. If he makes a slip there, in word or deed, and acts inconsistently, he may rest assured it will not be forgotten.
Let us endeavour to live daily as in the sight of a holy God. So living, it will matter little how much we are “watched” by an ill-natured and malicious world. Let us exercise ourselves to have a conscience void of offense toward God and man, and to do nothing which can give occasion to the Lord’s enemies to blaspheme. The thing is possible. By the grace of God it can be done.
from Expository Thoughts on Luke, vol. 2 (pgs. 148-149)