What is the point of prayer when God knows the future and is already in control of everything?

God's foreknowledge has nothing to do with the reason we aught to pray to Him. The inhabitants of Nineveh prayed when Jonah came through the city telling them God was going to destroy that city and as a result God repented of His decision as Jonah knew he probably would and wasn't happy about God's decision. God answers the prayers of all those who come before Him in a humble and contrite attitude of heart. Heartfelt prayers move God to act in mercy and loving kindness and He always answers the prayer of a humble and contrite person, unless in His over-all plan He sees that giving that person an answer would not be to their good as to the end result He sees for them. That is why some are not healed or don't receive an immediate answer to their heartfelt prayers. God know what is best for us and as a result acts toward us accordingly.

When we pray to our God and our Father we are talking to Him and letting him know how much we love Him and thanking Him for all he has given us through His beloved son Jesus. We have truth, light, life, and know the way to entrance to the coming kingdom of God to be established in the coming new age. He has given us the right to come boldly into His presence as His begotten sons as his little children to experience His loving arms drawing us to Himself. With all of this before me, why would I not want to come to God in prayer, telling Him about all that I need help for and waiting on His grace to assist me in those things. He has given us a paracletos - one who comes alongside to help us and his name is Jesus. He has given us a High Priest in heaven for us to intervene for us as our advocate and his name is Jesus. He has given us a comforter who promises to be with us always and his name is Jesus. He has given us a life giving spirit to be with us and his name is Jesus. Why would I not come before the throne of Jesus' God and ours, Jesus Father and ours and give him thanks for all His wonderful grace poured out on all of us who do not deserve anything at all and yet He has blessed us immeasurably! Halil Yah - Praise God.

Hebrews 13:15 Through him - Jesus therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name.

When we do this more and more we will feel the presence of the One with whom we have to do. It is a great comfort to know we are never alone, that our God has provided a person to come alongside us to help keep us on the narrow path that leads to life in the coming new age. That fact alone should to give us reason to come before our God and our Father with thanksgiving and praise continually. Indeed what a friend we have in Jesus and what a Father we have in our God who gives us all we have need of!