Jeremiah 33:3 (KJV) Call unto me, and I will answer thee, and shew thee great and mighty things, which thou knowest not.
When we call on the LORD we can be assured He will answer.
Romans 10:13 (KJV) For whosoever shall call upon the name of the Lord shall be saved.
He might not answer the way we want.
As we see when Jesus prayed.
Luke 22:42 (KJV) Saying, Father, if thou be willing, remove this cup from me: nevertheless not my will, but thine, be done.
We need to submit ourself to His will.
Matthew 6:10 (KJV) Thy kingdom come. Thy will be done in earth, as it is in heaven.
In the end we can be assured that whatever the LORD does will in the end be for His glory, the glory of His people and turn out for good.
Romans 8:24-30 (KJV)
24 For we are saved by hope: but hope that is seen is not hope: for what a man seeth, why doth he yet hope for?
25 But if we hope for that we see not, then do we with patience wait for it.
26 Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.
27 And he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God.
28 And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
30 Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified.