INQUIRER: My question is about single persons. Why is it that even if you pray hard for someone to come for you, he does not come? I would want a Christian or a believer for a partner. But in case someone comes along but he is an unbeliever, is there such a thing as this man being my mission to make him closer to the Lord, or will I be sinning if the one I'm going marry is an disbeliever?

BRO. ELI F. SORIANO (EFS): Firstly, when you ask God, sometimes not all our wishes are granted. Especially if it will not bring us good, you cannot blame God. For example, you have a three-year-old child, he asked for gasoline and a match, will you give them to him? Of course not. Even if he cries and whines, because you know, he is asking for a blade, he is four years old, he might get hurt. You will not give it to him. God is also like that. Not because we asked for it, He will give it to us instantly. Although He has all the power to give us all the things we may ask for, He is not careless. He is a God who looks on tomorrow and in the future. He considers first if it will compromise you. He can give it to you if it will not be bad for you.
But if it will be bad for you, He will not give it. In James 4:3 -

BRO. DANIEL RAZON (DSR): “Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts. “

EFS: If what you wish for is evil,you will spend it in evil, in pleasures, He will not give it.
Now, if you ask for something according to His will, He will give it to you.In I John 5:14 -

DSR: "And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us:"

EFS: When we ask something according to His will, in accordance with His will, He listens to us. It is impossible that He won't listen to us if what we ask for is in accordance to His will, which is not bad for us, He will hear us. In I John 5:15 -

DSR: “And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.”

EFS: So, be patient. Maybe your wish is not yet granted because it's not yet the right time. Now, in your other question - "I was asking for someone, then the one who came is an unbeliever? Can you have an unbelieving husband?" It can be.