Yet, you want me to preach Christ to the moslems who come to my store, by other than courtesy and respect? Come on, be clear, what am I supposed to do, in your book?
What do you sell in your store, that attracts all these moslems? Korans?
Heres a couple of verses that may get you going on a study of that subject.
But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed. Galatians 1:8-9
2 John 1:9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son. 10 If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed: 11 For he that biddeth him God speed is partaker of his evil deeds.