How can we help a child to know his Lord?

I want to make my children keen to pray, because they will pray once then forget about prayer many times. I always advise them and pray to Allah to guide them. How can I encourage them and make them love prayer?.

Is it true that anyone who does not accept that kuffaar are kuffaar is a kaafir himself, even if he prays, believes in the Qur'aan, and the Prophet Muhammad? If so, what is the proof for this? Can a person insist on believing that Jews and Christians can be believers and go to heaven after being shown clear evidence against this, and still be considered a Muslim?

If a non-Muslim visitor comes and lives in your home for a few days is it permissible that the Muslim host allows him/her to perform their prayers and rituals according to their own religion? Will the Muslim host be considered a sinner in this case as some of the prayers and rituals of other religions may not conform to Islamic beliefs?

What is your response to the one who says that so long as the Muslim has an atom’s weight of faith in his heart, he will enter Paradise even if he commits zina during his lifetime? 
What do you say to the wife who betrays her husband by committing the immoral act of zina for the sake of sexual pleasure?.

I tell non-Muslims that Allah created everything in this universe. They ask me who created Allah? How can Allaah have been there since the beginning? 
How can I answer them?

If the Muslims celebrate the birthday of the Prophet (blessings and peace of Allah be upon him), why do they not celebrate the birthday of the Prophet of Allah ‘Eesa (peace be upon him)? Is he not a Prophet who was sent from Allah, may He be glorified and exalted? I heard this idea from someone, and I know that Christmas and the celebration thereof is haraam, but I want an answer to this question. May Allah reward you with good.

A non-Muslim friend of mine asked how I could prove the existence of God and why He has given us life, and what its purpose is?
My answer did not satisfy him, please tell me what I should tell him?

In my school it is Christmas time. My school has this Christmas tradition. Every year a classroom gets an adopted family that is poor so they can buy gifts, food, and donate money to them for Christmas. Unfortunately, I have refused to donate any money or give any food for the following reason: These denotations will be done in the name of Christmas, so that when the adopted family receives these donations, they will say "God Bless The Christians". 
Am I right for refusing to give donations?

What is al-‘Aqeedah al-Tahhaawiyyah? What is it about?

Please tell me if a transparent fluid like water is excreted which becomes white coloured after drying is our fast and prayer valid? is ghusl farz on us or not.please please tell me because i pass this thing alot and find it on my underwear and i do ghusl 2 or 3 times a day to make my fast and prayer valid.plz tell me whatis this and what should i do.

Can you tell me the ruling on women wearing a red or yellow `abâyah? Does she have to wear black?