God will Answer Speedily
Will not God give justice to his elect, who cry to him day and night? Will he delay long over them? I tell you, he will give justice to them speedily. (Luke 17:7-8)
The only specific thing I can think of that the bible says God is slow about is anger. When it comes to helping His children, He will move as fast as possible.
So when it takes a while for Him to act, know that it doesn’t mean He hasn’t heard you, or that He doesn’t care, or that He doesn’t know what to do. He is perfect in His timing, swift in His acting, never slack in His concern.