Our Lord has told us how love to Him is to manifest itself. "Lovest thou Me?" "Feed My sheep" – identify yourself with My interests in other people, not, identify Me with your interests in other people. 1 Corinthians 13:4-8 gives the character of this love, it is the love of God expressing itself. The test of my love for Jesus is the practical one, all the rest is sentimental jargon.
Loyalty to Jesus Christ is the supernatural work of Redemption wrought in me by the Holy Ghost Who sheds abroad the love of God in my heart, and that love works efficaciously through me in contact with everyone I meet. I remain loyal to His Name although every common-sense fact gives the lie to Him, and declares that He has no more power than a morning mist.
The key to missionary devotion means being attached to nothing and no one saving Our Lord Himself, not being detached from things externally. Our Lord was amazingly in and out among ordinary things; His detachment was on the inside towards God. External detachment is often an indication of a secret vital attachment to the things we keep away from externally.
The loyalty of a missionary is to keep his soul concentratedly open to the nature of the Lord Jesus Christ. The men and women Our Lord sends out on His enterprises are the ordinary human stuff, plus dominating devotion to Himself wrought by the Holy Ghost.