He should be a walking image of Jesus!
"Whoever claims to live in Him, must walk as Jesus did." 1 John 2:6
"As you have therefore received Christ Jesus the Lord—so walk in Him" Colossians 2:6
If we have received Christ Himself in our inmost hearts, our new life will manifest its intimate acquaintance with Him by a walk of faith.
Walking implies action. Our religion is not to be confined to our prayer-closet. That which we believe—we must carry out into practical effect. If a man walks in Christ, then he so acts as Christ would act. He should be a walking image of Jesus—and men say of that man, "He is like his Master—he lives like Jesus Christ!"
Walking signifies progress. Proceed from grace to grace, run forward until you reach the uttermost degree of Christlikeness that a man can attain to.
Walking implies continuance. There must be a perpetual abiding in Christ. How many Christians think that in the morning and evening they ought to come into the company of Jesus—and may then give their hearts to the world all the day. But this is poor living—we should always be with Him, treading in His steps and doing His will.
Walking also implies habit. When we speak of a man's walk and conduct—we mean his habits, the constant tenor of his life. We must keep close to Him, cling to Him, never let Him go—and follow in His steps.
"That you would walk worthy of God, who calls you into His own kingdom and glory!" 1 Thessalonians 2:12
"Finally then, brethren, we request and exhort you in the Lord Jesus, that as you received from us instruction as to how you ought to walk and please God (just as you actually do walk), that you excel still more!" 1 Thessalonians 4:1