In a sense it can refer to people who are playing games with God, but... There are also people who do believe in God in a measure but do not really trust Him. Is that different?
Consider the statement that many people on this forum have made that no one can ever be sinless while they live still here on planet Earth in this body of flesh! Is that not a denial of the power of God? Is that not calling Jesus a liar? As in... "I am saved, but I can never be like Him"... yet what then does this mean?
"Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is." I John 3:2
Is that speaking only of some "hereafter" existence with God? It does not say that.
Jesus said this:
"And Jesus looking upon them saith, With men it is impossible, but not with God: for with God all things are possible." Mark 10:27
"With God all things are possible"! Does he add the words or the understanding that this can only be true after the dirt has been thrown over our faces and we enter into some "hereafter"? He does not say that. We say that when we say it cannot be done... Consider this for a child who the disciples of Jesus could not heal:
Mr 9:23 Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
Mr 9:24 And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.
And Jesus did just that! He helped the man's unbelief by healing the unhealable [according to the disciples] child.
Impossible healing indeed! What is impossible for God? God is limited by our lack of faith... so then when our faith falls short, why not ask of Him?
So who then should we turn away from...?
Mr 9:23 Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
Mr 9:24 And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.